November 2013 - discuss - mailman3.cels.anl.gov

Re: [mpich-discuss] problem with MPI_SCATTERV
by Danyang Su 29 Nov '13

29 Nov '13

Hi Jeff, I changed recvcnt to the value of scounts(rank+1), is it correct now? The results are correct. recvcnt = scounts(rank+1) !fortran array is 1-based) Thanks, Danyang On 28/11/2013 6:38 PM, Jeff Hammond wrote: > That's still wrong. Please read the documentation on how this function > must be used. > > Jeff > > Sent from my iPhone > > On Nov 28, 2013, at 5:48 PM, Danyang Su <danyang.su(a)gmail.com > <mailto:[email protected]>> wrote: > >> Hi Junchao, >> >> Thanks for pointing out this. It works after I changed the recvcnt >> value to the maximum number of elements in receive buffer (integer). >> >> Danyang >> >> On 28/11/2013 3:13 PM, Junchao Zhang wrote: >>> The second scounts in your code is suspicious. >>> According to >>> http://www.mcs.anl.gov/research/projects/mpi/www/www3/MPI_Scatterv.html, >>> sendcnts and recvcnt are of different types. >>> >>> >>> --Junchao Zhang >>> >>> >>> On Thu, Nov 28, 2013 at 2:29 PM, Danyang Su <danyang.su(a)gmail.com >>> <mailto:[email protected]>> wrote: >>> >>> Hi All, >>> >>> I ran into a problem with MPI_SCATTERV. When the sendcounts >>> (scounts in code) is the same for every process, it works fine, >>> but if the sendcounts is different (e.g., 1, 2, 3, 4 for 4 >>> processes, respectively), there will be error as follows: >>> >>> Fatal error in PMPI_Scatterv: Message truncated, error stack: >>> PMPI_Scatterv(376)................: >>> MPI_Scatterv(sbuf=0000000000000000, scnts=0000000000E16CD0, >>> displs=0000000000E16CA0, >>> MPI_INT, rbuf=0000000002BD0050, rcount=1, MPI_INT, root=0, >>> MPI_COMM_WORLD) failed >>> MPIR_Scatterv_impl(187)...........: >>> MPIR_Scatterv(144)................: >>> MPIDI_CH3U_Receive_data_found(129): Message from rank 0 and tag >>> 6 truncated; 16 bytes received but buffer size is 4 >>> >>> The code is simple as follows: >>> >>> call MPI_SCATTERV(ja_in, *scounts*, displs, MPI_INT, ja, >>> *scounts*, MPI_INT, 0, comm , ierr) >>> >>> ja_in is allocated for process #0 and ja is allocated for every >>> process. The size of ja_in and ja is big enough to hold large >>> dataset. >>> >>> Thanks and regards, >>> >>> Danyang >>> >>> _______________________________________________ >>> discuss mailing list discuss(a)mpich.org <mailto:[email protected]> >>> To manage subscription options or unsubscribe: >>> https://lists.mpich.org/mailman/listinfo/discuss >>> >>> >>> >>> >>> _______________________________________________ >>> discuss mailing listdiscuss(a)mpich.org >>> To manage subscription options or unsubscribe: >>> https://lists.mpich.org/mailman/listinfo/discuss >> >> _______________________________________________ >> discuss mailing list discuss(a)mpich.org <mailto:[email protected]> >> To manage subscription options or unsubscribe: >> https://lists.mpich.org/mailman/listinfo/discuss > > > _______________________________________________ > discuss mailing list discuss(a)mpich.org > To manage subscription options or unsubscribe: > https://lists.mpich.org/mailman/listinfo/discuss

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Re: [mpich-discuss] MPI_Recv error
by Pavan Balaji 29 Nov '13

29 Nov '13

We need more context to say anything about the error. — Pavan On Nov 29, 2013, at 9:08 AM, Soheil Hooshdaran <shooshdaran577(a)gmail.com> wrote: > Hi. > What does this error mean? > MPI_Recv(184).....................: MPI_Recv(buf=0xbfd571e8, count=0, MPI_INT, src=0, tag=1, MPI_COMM_WORLD, status=0xbfd571c0) failed > > _______________________________________________ > discuss mailing list discuss(a)mpich.org > To manage subscription options or unsubscribe: > https://lists.mpich.org/mailman/listinfo/discuss -- Pavan Balaji http://www.mcs.anl.gov/~balaji

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MPI_Recv error
by Soheil Hooshdaran 29 Nov '13

29 Nov '13

Hi. What does this error mean? MPI_Recv(184).....................: MPI_Recv(buf=0xbfd571e8, count=0, MPI_INT, src=0, tag=1, MPI_COMM_WORLD, status=0xbfd571c0) failed

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Re: [mpich-discuss] MPI_init very slow with more than 3 nodes
by Bixente Bodo Gómez 29 Nov '13

29 Nov '13

Before writing to the list I tried it. The response was fast, without asking for authentication. Next week I will try with an isolated switch from the rest of the network. I will send the results. Thank you very much. El vie, 29-11-2013 a las 08:13 -0600, Pavan Balaji escribió: > Try to ssh between the nodes and see how long it takes. It might give some hint on what’s going on. > > — Pavan > > On Nov 29, 2013, at 5:21 AM, Bixente BODO GOMEZ <bixente.bodo(a)ehu.es> wrote: > > > Hi. > > > > In the attachment I send the tests I've done. Yesterday I had to wait 20 minutes; now only 4 or 6. > > I will ask about the network. > > > > > > Pavan Balaji <balaji(a)mcs.anl.gov> escribió: > > > >> It is possible there’s something really slow on your network. Just to eliminate MPI_INIT as a possible cause, can you try a non-MPI program: maybe /bin/true or /bin/hostname? > >> > >> % mpiexec -f fila5 -np 8 /bin/true > >> > >> — Pavan > >> > >> On Nov 28, 2013, at 8:10 AM, Bixente BODO GOMEZ <bixente.bodo(a)ehu.es> wrote: > >> > >>> Goods. > >>> > >>> I'm testing a mpich cluster (3.0.4) with 7 nodes quad core, Ubuntu 12.04. The master has the home directory > >>> and the nodes get it by nfs. I have change RPCNFSDCOUN from 8 to 64. > >>> > >>> The programs go fine with master and ONE of the other nodes, but when I start them with more nodes, > >>> MPI_Init (I think so) takes long time (~20 minutes). At these time in all nodes there is many network > >>> (read and write) and master's hard disk activity. For exemple: > >>> > >>> mpiu@u105251:~$ date; mpirun -f fila5 -np 8 test/hello; date > >>> mié nov 27 15:17:29 CET 2013 > >>> Hola desde el procesador u105251. 0 de 8 > >>> Hola desde el procesador u105251. 1 de 8 > >>> Hola desde el procesador u105251. 2 de 8 > >>> Hola desde el procesador u105251. 3 de 8 > >>> Hola desde el procesador u103972. 4 de 8 > >>> Hola desde el procesador u103972. 5 de 8 > >>> Hola desde el procesador u103972. 6 de 8 > >>> Hola desde el procesador u103972. 7 de 8 > >>> mié nov 27 15:17:30 CET 2013 > >>> mpiu@u105251:~$ date; mpirun -f fila5 -np 16 test/hello; date > >>> mié nov 27 15:17:39 CET 2013 > >>> Hola desde el procesador u105251. 2 de 16 > >>> Hola desde el procesador u105251. 0 de 16 > >>> Hola desde el procesador u105251. 1 de 16 > >>> Hola desde el procesador u105251. 3 de 16 > >>> Hola desde el procesador u103972. 4 de 16 > >>> Hola desde el procesador u103950. 8 de 16 > >>> Hola desde el procesador u103976.12 de 16 > >>> Hola desde el procesador u103972. 5 de 16 > >>> Hola desde el procesador u103950. 9 de 16 > >>> Hola desde el procesador u103976.13 de 16 > >>> Hola desde el procesador u103972. 7 de 16 > >>> Hola desde el procesador u103950.10 de 16 > >>> Hola desde el procesador u103976.14 de 16 > >>> Hola desde el procesador u103972. 6 de 16 > >>> Hola desde el procesador u103950.11 de 16 > >>> Hola desde el procesador u103976.15 de 16 > >>> mié nov 27 15:36:18 CET 2013 > >>> mpiu@u105251:~$ > >>> > >>> When the programs start, i.e. since the first C instrucction, they run fine. For that I think that the problem > >>> is MPI_init > >>> > >>> Anybody kowns why? > >>> Thank. > >>> > >>> _______________________________________________ > >>> discuss mailing list discuss(a)mpich.org > >>> To manage subscription options or unsubscribe: > >>> https://lists.mpich.org/mailman/listinfo/discuss > >> > >> -- > >> Pavan Balaji > >> http://www.mcs.anl.gov/~balaji > >> > >> _______________________________________________ > >> discuss mailing list discuss(a)mpich.org > >> To manage subscription options or unsubscribe: > >> https://lists.mpich.org/mailman/listinfo/discuss > > > > > > <test.txt>_______________________________________________ > > discuss mailing list discuss(a)mpich.org > > To manage subscription options or unsubscribe: > > https://lists.mpich.org/mailman/listinfo/discuss > > -- > Pavan Balaji > http://www.mcs.anl.gov/~balaji > > _______________________________________________ > discuss mailing list discuss(a)mpich.org > To manage subscription options or unsubscribe: > https://lists.mpich.org/mailman/listinfo/discuss

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Re: [mpich-discuss] MPI_init very slow with more than 3 nodes
by Pavan Balaji 29 Nov '13

29 Nov '13

Try to ssh between the nodes and see how long it takes. It might give some hint on what’s going on. — Pavan On Nov 29, 2013, at 5:21 AM, Bixente BODO GOMEZ <bixente.bodo(a)ehu.es> wrote: > Hi. > > In the attachment I send the tests I've done. Yesterday I had to wait 20 minutes; now only 4 or 6. > I will ask about the network. > > > Pavan Balaji <balaji(a)mcs.anl.gov> escribió: > >> It is possible there’s something really slow on your network. Just to eliminate MPI_INIT as a possible cause, can you try a non-MPI program: maybe /bin/true or /bin/hostname? >> >> % mpiexec -f fila5 -np 8 /bin/true >> >> — Pavan >> >> On Nov 28, 2013, at 8:10 AM, Bixente BODO GOMEZ <bixente.bodo(a)ehu.es> wrote: >> >>> Goods. >>> >>> I'm testing a mpich cluster (3.0.4) with 7 nodes quad core, Ubuntu 12.04. The master has the home directory >>> and the nodes get it by nfs. I have change RPCNFSDCOUN from 8 to 64. >>> >>> The programs go fine with master and ONE of the other nodes, but when I start them with more nodes, >>> MPI_Init (I think so) takes long time (~20 minutes). At these time in all nodes there is many network >>> (read and write) and master's hard disk activity. For exemple: >>> >>> mpiu@u105251:~$ date; mpirun -f fila5 -np 8 test/hello; date >>> mié nov 27 15:17:29 CET 2013 >>> Hola desde el procesador u105251. 0 de 8 >>> Hola desde el procesador u105251. 1 de 8 >>> Hola desde el procesador u105251. 2 de 8 >>> Hola desde el procesador u105251. 3 de 8 >>> Hola desde el procesador u103972. 4 de 8 >>> Hola desde el procesador u103972. 5 de 8 >>> Hola desde el procesador u103972. 6 de 8 >>> Hola desde el procesador u103972. 7 de 8 >>> mié nov 27 15:17:30 CET 2013 >>> mpiu@u105251:~$ date; mpirun -f fila5 -np 16 test/hello; date >>> mié nov 27 15:17:39 CET 2013 >>> Hola desde el procesador u105251. 2 de 16 >>> Hola desde el procesador u105251. 0 de 16 >>> Hola desde el procesador u105251. 1 de 16 >>> Hola desde el procesador u105251. 3 de 16 >>> Hola desde el procesador u103972. 4 de 16 >>> Hola desde el procesador u103950. 8 de 16 >>> Hola desde el procesador u103976.12 de 16 >>> Hola desde el procesador u103972. 5 de 16 >>> Hola desde el procesador u103950. 9 de 16 >>> Hola desde el procesador u103976.13 de 16 >>> Hola desde el procesador u103972. 7 de 16 >>> Hola desde el procesador u103950.10 de 16 >>> Hola desde el procesador u103976.14 de 16 >>> Hola desde el procesador u103972. 6 de 16 >>> Hola desde el procesador u103950.11 de 16 >>> Hola desde el procesador u103976.15 de 16 >>> mié nov 27 15:36:18 CET 2013 >>> mpiu@u105251:~$ >>> >>> When the programs start, i.e. since the first C instrucction, they run fine. For that I think that the problem >>> is MPI_init >>> >>> Anybody kowns why? >>> Thank. >>> >>> _______________________________________________ >>> discuss mailing list discuss(a)mpich.org >>> To manage subscription options or unsubscribe: >>> https://lists.mpich.org/mailman/listinfo/discuss >> >> -- >> Pavan Balaji >> http://www.mcs.anl.gov/~balaji >> >> _______________________________________________ >> discuss mailing list discuss(a)mpich.org >> To manage subscription options or unsubscribe: >> https://lists.mpich.org/mailman/listinfo/discuss > > > <test.txt>_______________________________________________ > discuss mailing list discuss(a)mpich.org > To manage subscription options or unsubscribe: > https://lists.mpich.org/mailman/listinfo/discuss -- Pavan Balaji http://www.mcs.anl.gov/~balaji

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Re: [mpich-discuss] MPICH error
by Wesley Bland 29 Nov '13

29 Nov '13

We need to be able to see you entire send and receive calls, but at a first pass, it's probably that he sizes of your send and receive don't match. Send us a minimum working example (not your entire code). Wesley > On Nov 29, 2013, at 1:56 AM, Soheil Hooshdaran <shooshdaran577(a)gmail.com> wrote: > > Hello. > After executing MPI_Send() for the first time in the root process, my program blocks. > > int the root process, I have: > ... > while(i++<iWorldSize) > { > cout << "executing send for the " << i-1 << "th time" << endl; > MPI_Send(&A[i-1], n*m/iWorldSize, MPI_INT, j, itag, MPI_COMM_WORLD); > cout << "executed send for the " << i << "th time" << endl; > }//end while > ... > > and in the slave processes I have > > ... > MPI_Status status; > > int *buffer = new int[m*(n/iWorldSize)]; > > cout << "\n\n\n**********Executing receive*******" << endl; > MPI_Recv(&buffer, m*(n/iWorld > ... > > where did I go wrong? > > Thank you > _______________________________________________ > discuss mailing list discuss(a)mpich.org > To manage subscription options or unsubscribe: > https://lists.mpich.org/mailman/listinfo/discuss

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Re: [mpich-discuss] MPI_init very slow with more than 3 nodes
by Bixente BODO GOMEZ 29 Nov '13

29 Nov '13

Hi. In the attachment I send the tests I've done. Yesterday I had to wait 20 minutes; now only 4 or 6. I will ask about the network. Pavan Balaji <balaji(a)mcs.anl.gov> escribió: > It is possible there’s something really slow on your network. Just > to eliminate MPI_INIT as a possible cause, can you try a non-MPI > program: maybe /bin/true or /bin/hostname? > > % mpiexec -f fila5 -np 8 /bin/true > > — Pavan > > On Nov 28, 2013, at 8:10 AM, Bixente BODO GOMEZ <bixente.bodo(a)ehu.es> wrote: > >> Goods. >> >> I'm testing a mpich cluster (3.0.4) with 7 nodes quad core, Ubuntu >> 12.04. The master has the home directory >> and the nodes get it by nfs. I have change RPCNFSDCOUN from 8 to 64. >> >> The programs go fine with master and ONE of the other nodes, but >> when I start them with more nodes, >> MPI_Init (I think so) takes long time (~20 minutes). At these time >> in all nodes there is many network >> (read and write) and master's hard disk activity. For exemple: >> >> mpiu@u105251:~$ date; mpirun -f fila5 -np 8 test/hello; date >> mié nov 27 15:17:29 CET 2013 >> Hola desde el procesador u105251. 0 de 8 >> Hola desde el procesador u105251. 1 de 8 >> Hola desde el procesador u105251. 2 de 8 >> Hola desde el procesador u105251. 3 de 8 >> Hola desde el procesador u103972. 4 de 8 >> Hola desde el procesador u103972. 5 de 8 >> Hola desde el procesador u103972. 6 de 8 >> Hola desde el procesador u103972. 7 de 8 >> mié nov 27 15:17:30 CET 2013 >> mpiu@u105251:~$ date; mpirun -f fila5 -np 16 test/hello; date >> mié nov 27 15:17:39 CET 2013 >> Hola desde el procesador u105251. 2 de 16 >> Hola desde el procesador u105251. 0 de 16 >> Hola desde el procesador u105251. 1 de 16 >> Hola desde el procesador u105251. 3 de 16 >> Hola desde el procesador u103972. 4 de 16 >> Hola desde el procesador u103950. 8 de 16 >> Hola desde el procesador u103976.12 de 16 >> Hola desde el procesador u103972. 5 de 16 >> Hola desde el procesador u103950. 9 de 16 >> Hola desde el procesador u103976.13 de 16 >> Hola desde el procesador u103972. 7 de 16 >> Hola desde el procesador u103950.10 de 16 >> Hola desde el procesador u103976.14 de 16 >> Hola desde el procesador u103972. 6 de 16 >> Hola desde el procesador u103950.11 de 16 >> Hola desde el procesador u103976.15 de 16 >> mié nov 27 15:36:18 CET 2013 >> mpiu@u105251:~$ >> >> When the programs start, i.e. since the first C instrucction, they >> run fine. For that I think that the problem >> is MPI_init >> >> Anybody kowns why? >> Thank. >> >> _______________________________________________ >> discuss mailing list discuss(a)mpich.org >> To manage subscription options or unsubscribe: >> https://lists.mpich.org/mailman/listinfo/discuss > > -- > Pavan Balaji > http://www.mcs.anl.gov/~balaji > > _______________________________________________ > discuss mailing list discuss(a)mpich.org > To manage subscription options or unsubscribe: > https://lists.mpich.org/mailman/listinfo/discuss

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Re: [mpich-discuss] Undefined reference to MPL
by Reuti 29 Nov '13

29 Nov '13

Hi, Am 29.11.2013 um 09:07 schrieb Francisco Pastor: > I recently installed mpich 3.0.4 in order to compile a meteorological model, RAMS 6.0. We installed the model time ago with mpich2-1.0.5p4. Now we want to build a new cluster under Ubuntu 12.04 and MPICH. > > When building the model I get this messages, the last ones in a longer list, and maybe they are related to mpich. As a new user of mpich I'm not sure where the problem is coming from. Should I install an older mpich2 version? > > Thanks for your help How is RAMS linked during build - maybe it uses not the mpi... wrappers but links directly and missed to include -lmpl -- Reuti > /usr/local/lib//libmpich.a(param_vals.o):param_vals.c:(.text+0xb4d): more undefined references to `MPL_env2bool' follow > /usr/local/lib//libmpich.a(param_vals.o): In function `MPIR_Param_init_params': > param_vals.c:(.text+0xbac): undefined reference to `MPL_env2range' > param_vals.c:(.text+0xbd1): undefined reference to `MPL_env2range' > param_vals.c:(.text+0xbf6): undefined reference to `MPL_env2range' > param_vals.c:(.text+0xc1b): undefined reference to `MPL_env2range' > param_vals.c:(.text+0xc38): undefined reference to `MPL_env2int' > param_vals.c:(.text+0xc55): undefined reference to `MPL_env2int' > /usr/local/lib//libmpich.a(mpid_init.o): In function `MPID_Init': > mpid_init.c:(.text+0x194): undefined reference to `MPL_env2bool' > /usr/local/lib//libmpich.a(mpid_vc.o): In function `MPIDI_Populate_vc_node_ids': > mpid_vc.c:(.text+0xb66): undefined reference to `MPL_env2int' > mpid_vc.c:(.text+0xb7d): undefined reference to `MPL_env2int' > /usr/local/lib//libmpich.a(mpi_t_util.o): In function `MPIU_Tool_strncpy': > mpi_t_util.c:(.text+0x49c): undefined reference to `MPL_strncpy' > make: *** [rams-6.0-opt] Error 1 > > -- > ----------- > Dr. Francisco Pastor > Meteorology department, Instituto Universitario CEAM-UMH > http://www.ceam.es > ----------- > Mendeley profile: http://www.mendeley.com/profiles/francisco-pastor1/ > Google Scholar: http://scholar.google.com/citations?user=V3mmCdkAAAAJ&hl=es > Researcher ID: http://www.researcherid.com/rid/B-8331-2008 > Cosis profile: http://www.cosis.net/profile/francisco.pastor > ----------- > mail: paco(a)ceam.es > skype: paco.pastor.guzman > ----------- > Parque Tecnologico, C/ Charles R. Darwin, 14 > 46980 PATERNA (Valencia), Spain > Tlf. 96 131 82 27 - Fax. 96 131 81 90 > > > --------------------------------------------------------------------- > Este mensaje y los ficheros anexos son confidenciales. Los mismos contienen información reservada de la empresa que no puede ser difundida. Si usted ha recibido este correo por error, tenga la amabilidad de eliminarlo de su sistema y avisar al remitente mediante reenvío a su dirección electrónica; no deberá copiar el mensaje ni divulgar su contenido a ninguna persona. > > Su dirección de correo electrónico junto a sus datos personales forman parte de un fichero titularidad de la Fundación de la Comunidad Valenciana Centro de Estudios Ambientales del Mediterráneo - CEAM, con CIF: G-46957213, cuya finalidad es la de mantener el contacto con Ud. De acuerdo con la Ley Orgánica 15/1999, usted puede ejercitar sus derechos de acceso, rectificación, cancelación y, en su caso, oposición enviando una solicitud por escrito, acompañada de una fotocopia de su DNI dirigida a: Fundación de la Comunidad Valenciana Centro de Estudios Ambientales del Mediterráneo - CEAM. C/ Charles R. Darwin, 14. Parque Tecnológico.46980 PATERNA (Valencia). > > This message and the attached files are confidential. They contain reserved information belonging to our centre and are not to be broadcast. If you have received this email by mistake, please delete it from your system and alert the sender by returning it to his/her email address. You must not copy or divulge the contents of the message to anyone. > > Your email address and personal data are included in a file belonging to the Fundación de la Comunidad Valenciana Centro de Estudios Ambientales del Mediterráneo - CEAM, con CIF: G-46957213. The purpose of this file is to allow us to keep in contact with you. In accordance with Organic Law 15/1999, you are permitted to access, rectify, cancel or oppose the contents of this file by submitting a written request, accompanied by a photocopy of your DNI, to: Fundación de la Comunidad Valenciana Centro de Estudios Ambientales del Mediterráneo - CEAM. C/ Charles R. Darwin, 14. Parque Tecnológico.46980 PATERNA (Valencia). > > > > _______________________________________________ > discuss mailing list discuss(a)mpich.org > To manage subscription options or unsubscribe: > https://lists.mpich.org/mailman/listinfo/discuss >

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Undefined reference to MPL
by Francisco Pastor 29 Nov '13

29 Nov '13

Hi mpich users I recently installed mpich 3.0.4 in order to compile a meteorological model, RAMS 6.0. We installed the model time ago with mpich2-1.0.5p4. Now we want to build a new cluster under Ubuntu 12.04 and MPICH. When building the model I get this messages, the last ones in a longer list, and maybe they are related to mpich. As a new user of mpich I'm not sure where the problem is coming from. Should I install an older mpich2 version? Thanks for your help /usr/local/lib//libmpich.a(param_vals.o):param_vals.c:(.text+0xb4d): more undefined references to `MPL_env2bool' follow /usr/local/lib//libmpich.a(param_vals.o): In function `MPIR_Param_init_params': param_vals.c:(.text+0xbac): undefined reference to `MPL_env2range' param_vals.c:(.text+0xbd1): undefined reference to `MPL_env2range' param_vals.c:(.text+0xbf6): undefined reference to `MPL_env2range' param_vals.c:(.text+0xc1b): undefined reference to `MPL_env2range' param_vals.c:(.text+0xc38): undefined reference to `MPL_env2int' param_vals.c:(.text+0xc55): undefined reference to `MPL_env2int' /usr/local/lib//libmpich.a(mpid_init.o): In function `MPID_Init': mpid_init.c:(.text+0x194): undefined reference to `MPL_env2bool' /usr/local/lib//libmpich.a(mpid_vc.o): In function `MPIDI_Populate_vc_node_ids': mpid_vc.c:(.text+0xb66): undefined reference to `MPL_env2int' mpid_vc.c:(.text+0xb7d): undefined reference to `MPL_env2int' /usr/local/lib//libmpich.a(mpi_t_util.o): In function `MPIU_Tool_strncpy': mpi_t_util.c:(.text+0x49c): undefined reference to `MPL_strncpy' make: *** [rams-6.0-opt] Error 1 -- ----------- Dr. Francisco Pastor Meteorology department, Instituto Universitario CEAM-UMH http://www.ceam.es ----------- Mendeley profile: http://www.mendeley.com/profiles/francisco-pastor1/ Google Scholar: http://scholar.google.com/citations?user=V3mmCdkAAAAJ&hl=es Researcher ID: http://www.researcherid.com/rid/B-8331-2008 Cosis profile: http://www.cosis.net/profile/francisco.pastor ----------- mail: paco(a)ceam.es skype: paco.pastor.guzman ----------- Parque Tecnologico, C/ Charles R. Darwin, 14 46980 PATERNA (Valencia), Spain Tlf. 96 131 82 27 - Fax. 96 131 81 90 --------------------------------------------------------------------- Este mensaje y los ficheros anexos son confidenciales. Los mismos contienen informaciï¿½n reservada de la empresa que no puede ser difundida. Si usted ha recibido este correo por error, tenga la amabilidad de eliminarlo de su sistema y avisar al remitente mediante reenvï¿½o a su direcciï¿½n electrï¿½nica; no deberï¿½ copiar el mensaje ni divulgar su contenido a ninguna persona. Su direcciï¿½n de correo electrï¿½nico junto a sus datos personales forman parte de un fichero titularidad de la Fundaciï¿½n de la Comunidad Valenciana Centro de Estudios Ambientales del Mediterrï¿½neo - CEAM, con CIF: G-46957213, cuya finalidad es la de mantener el contacto con Ud. De acuerdo con la Ley Orgï¿½nica 15/1999, usted puede ejercitar sus derechos de acceso, rectificaciï¿½n, cancelaciï¿½n y, en su caso, oposiciï¿½n enviando una solicitud por escrito, acompaï¿½ada de una fotocopia de su DNI dirigida a: Fundaciï¿½n de la Comunidad Valenciana Centro de Estudios Ambientales del Mediterrï¿½neo - CEAM. C/ Charles R. Darwin, 14. Parque Tecnolï¿½gico.46980 PATERNA (Valencia). This message and the attached files are confidential. They contain reserved information belonging to our centre and are not to be broadcast. If you have received this email by mistake, please delete it from your system and alert the sender by returning it to his/her email address. You must not copy or divulge the contents of the message to anyone. Your email address and personal data are included in a file belonging to the Fundaciï¿½n de la Comunidad Valenciana Centro de Estudios Ambientales del Mediterrï¿½neo - CEAM, con CIF: G-46957213. The purpose of this file is to allow us to keep in contact with you. In accordance with Organic Law 15/1999, you are permitted to access, rectify, cancel or oppose the contents of this file by submitting a written request, accompanied by a photocopy of your DNI, to: Fundaciï¿½n de la Comunidad Valenciana Centro de Estudios Ambientales del Mediterrï¿½neo - CEAM. C/ Charles R. Darwin, 14. Parque Tecnolï¿½gico.46980 PATERNA (Valencia).

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MPICH error
by Soheil Hooshdaran 29 Nov '13

29 Nov '13

Hello. After executing MPI_Send() for the first time in the root process, my program blocks. int the root process, I have: ... while(i++<iWorldSize) { cout << "executing send for the " << i-1 << "th time" << endl; MPI_Send(&A[i-1], n*m/iWorldSize, MPI_INT, j, itag, MPI_COMM_WORLD); cout << "executed send for the " << i << "th time" << endl; }//end while ... and in the slave processes I have ... MPI_Status status; int *buffer = new int[m*(n/iWorldSize)]; cout << "\n\n\n**********Executing receive*******" << endl; MPI_Recv(&buffer, m*(n/iWorld ... where did I go wrong? Thank you

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