August 2023 - discuss - mailman3.cels.anl.gov

Re: [mpich-discuss] Installing mpich with libfabric
by Zhou, Hui 11 Aug '23

11 Aug '23

Hi Pratik, Could you clarify what do you ment by "utilizing OFI"? Are you looking for libfabric calls such as fi_writemsg? -- Hui ________________________________ From: Pratik Shelar via discuss <discuss(a)mpich.org> Sent: Friday, August 11, 2023 1:32 PM To: discuss(a)mpich.org <discuss(a)mpich.org> Cc: Pratik Shelar <pshelar(a)cdac.in> Subject: [mpich-discuss] Installing mpich with libfabric Hi Everyone, specifically aiming to enable RMA (Remote Memory Access) calls for efficient parallel computing. However, I've encountered some challenges in achieving the desired setup. I have attempted multiple configurations, but it seems that the RMA calls of OFI are not being utilized based on my backtracing results. I am seeking your guidance to resolve this issue. Here are the configurations I've tried: 1. ./configure --prefix=/home/<username>/mpich/mpich_exe --with-ch4-ofi-direct-provider=<provider> --with-libfabric-lib=/home/<username>/libfabric/libfabric_exe/lib --with-libfabric-include=/home/<username>/libfabric/libfabric_exe/include 2. ./configure --prefix=/home/<username>/mpich/mpich_exe --enable-ch4-am-only --with-ch4-ofi-direct-provider=<provider> ---with-libfabric-lib=/home/<username>/libfabric/libfabric_exe/lib --with-libfabric-include=/home/<username>/libfabric/libfabric_exe/include 3. ./configure --prefix=/home/<username>/mpich/mpich_exe --enable-mpit-pvars=rma --with-ch4-ofi-direct-provider=<provider> ---with-libfabric-lib=/home/<username>/libfabric/libfabric_exe/lib --with-libfabric-include=/home/<username>/libfabric/libfabric_exe/include 4. ./configure --prefix=/home/<username>/mpich/mpich_exe --enable-mpit-pvars=rma --with-device=ch4:ofi ---with-libfabric-lib=/home/<username>/libfabric/libfabric_exe/lib --with-libfabric-include=/home/<username>/libfabric/libfabric_exe/include Despite these attempts, the RMA calls from OFI are not being utilized as indicated by my analysis with Valgrind. I kindly request your expertise and assistance in resolving this matter. If there are specific configurations or steps that I might be missing, please provide guidance on how to properly enable RMA calls using OFI in the MPICH setup. Thank you for your time and support. I am looking forward to your valuable insights and suggestions to help me overcome this issue. Thanks & Regards, Pratik Baban Shelar Project Engineer HPC-Technologies CDAC-PUNE ------------------------------------------------------------------------------------------------------------ [ C-DAC is on Social-Media too. Kindly follow us at: Facebook: https://www.facebook.com/CDACINDIA & Twitter: @cdacindia ] This e-mail is for the sole use of the intended recipient(s) and may contain confidential and privileged information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies and the original message. Any unauthorized review, use, disclosure, dissemination, forwarding, printing or copying of this email is strictly prohibited and appropriate legal action will be taken. ------------------------------------------------------------------------------------------------------------

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Installing mpich with libfabric
by Pratik Shelar 11 Aug '23

11 Aug '23

Hi Everyone, specifically aiming to enable RMA (Remote Memory Access) calls for efficient parallel computing. However, I've encountered some challenges in achieving the desired setup. I have attempted multiple configurations, but it seems that the RMA calls of OFI are not being utilized based on my backtracing results. I am seeking your guidance to resolve this issue. Here are the configurations I've tried: 1. ./configure --prefix=/home/<username>/mpich/mpich_exe --with-ch4-ofi-direct-provider=<provider> --with-libfabric-lib=/home/<username>/libfabric/libfabric_exe/lib --with-libfabric-include=/home/<username>/libfabric/libfabric_exe/include 2. ./configure --prefix=/home/<username>/mpich/mpich_exe --enable-ch4-am-only --with-ch4-ofi-direct-provider=<provider> ---with-libfabric-lib=/home/<username>/libfabric/libfabric_exe/lib --with-libfabric-include=/home/<username>/libfabric/libfabric_exe/include 3. ./configure --prefix=/home/<username>/mpich/mpich_exe --enable-mpit-pvars=rma --with-ch4-ofi-direct-provider=<provider> ---with-libfabric-lib=/home/<username>/libfabric/libfabric_exe/lib --with-libfabric-include=/home/<username>/libfabric/libfabric_exe/include 4. ./configure --prefix=/home/<username>/mpich/mpich_exe --enable-mpit-pvars=rma --with-device=ch4:ofi ---with-libfabric-lib=/home/<username>/libfabric/libfabric_exe/lib --with-libfabric-include=/home/<username>/libfabric/libfabric_exe/include Despite these attempts, the RMA calls from OFI are not being utilized as indicated by my analysis with Valgrind. I kindly request your expertise and assistance in resolving this matter. If there are specific configurations or steps that I might be missing, please provide guidance on how to properly enable RMA calls using OFI in the MPICH setup. Thank you for your time and support. I am looking forward to your valuable insights and suggestions to help me overcome this issue. Thanks & Regards, Pratik Baban Shelar Project Engineer HPC-Technologies CDAC-PUNE ------------------------------------------------------------------------------------------------------------ [ C-DAC is on Social-Media too. Kindly follow us at: Facebook: https://www.facebook.com/CDACINDIA & Twitter: @cdacindia ] This e-mail is for the sole use of the intended recipient(s) and may contain confidential and privileged information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies and the original message. Any unauthorized review, use, disclosure, dissemination, forwarding, printing or copying of this email is strictly prohibited and appropriate legal action will be taken. ------------------------------------------------------------------------------------------------------------

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Re: [mpich-discuss] reading context error
by Zhou, Hui 08 Aug '23

08 Aug '23

It is saying "An existing connection was forcibly closed by the remote host", which often means the remote process is exiting or being killed (e.g. from segfault). Unfortunately, there isn't much more insight we can offer. -- Hui ________________________________ From: Nazmul Haque via discuss <discuss(a)mpich.org> Sent: Tuesday, August 8, 2023 4:37 AM To: discuss(a)mpich.org <discuss(a)mpich.org> Cc: Nazmul Haque <shadhin873(a)outlook.com> Subject: [mpich-discuss] reading context error Hello, While running lammps on mpi using mpich2, we are getting this error and even after doing a thorough search on online and applying diffrent ideas to solve the problem we are getting no solution. May I know why this error is showing? Thank you, Nazmul [cid:7c8cc4e4-2012-45f4-940b-8f7387196b17]

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reading context error
by Nazmul Haque 08 Aug '23

08 Aug '23

Hello, While running lammps on mpi using mpich2, we are getting this error and even after doing a thorough search on online and applying diffrent ideas to solve the problem we are getting no solution. May I know why this error is showing? Thank you, Nazmul [cid:7c8cc4e4-2012-45f4-940b-8f7387196b17]

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reading context error
by Nazmul Haque 08 Aug '23

08 Aug '23

Hello, While running lammps on mpi using mpich2, we are getting this error and even after doing a thorough search on online and applying diffrent ideas to solve the problem we are getting no solution. May I know why this error is showing? Thank you, Nazmul [cid:cadc3264-a77b-41e8-8f2a-2160ffa7b07a]

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