Hi Åsmund, Thank you for emailing us, but this email needs to go to MVAPICH team. The correct mailing list will be [email protected]<mailto:[email protected]> in http://mvapich.cse.ohio-state.edu/mailinglists/. Thanks, Sangmin On Sep 9, 2014, at 2:32 PM, Åsmund Ervik <[email protected]<mailto:[email protected]>> wrote: Hello all, I'm compiling mvapich2 on an old quirky cluster where I'm not root. After having problems with shared memory using mvapich2 with plain configure/make (I had to disable shared memory for any jobs doing allreduce), I decided to try to configure/make using --with-shared-memory=sysv . This failed at the "make" step, with the following error: CC src/mpid/ch3/channels/mrail/src/gen2/rdma_iba_1sc.lo src/mpid/ch3/channels/mrail/src/gen2/rdma_iba_1sc.c: In function 'mv2_allocate_shm_local': src/mpid/ch3/channels/mrail/src/gen2/rdma_iba_1sc.c:182: error: 'O_CREAT' undeclared (first use in this function) src/mpid/ch3/channels/mrail/src/gen2/rdma_iba_1sc.c:182: error: (Each undeclared identifier is reported only once src/mpid/ch3/channels/mrail/src/gen2/rdma_iba_1sc.c:182: error: for each function it appears in.) src/mpid/ch3/channels/mrail/src/gen2/rdma_iba_1sc.c:182: error: 'O_RDWR' undeclared (first use in this function) src/mpid/ch3/channels/mrail/src/gen2/rdma_iba_1sc.c:182: error: 'O_EXCL' undeclared (first use in this function) src/mpid/ch3/channels/mrail/src/gen2/rdma_iba_1sc.c: In function 'mv2_rma_allocate_shm': src/mpid/ch3/channels/mrail/src/gen2/rdma_iba_1sc.c:375: error: 'O_CREAT' undeclared (first use in this function) src/mpid/ch3/channels/mrail/src/gen2/rdma_iba_1sc.c:375: error: 'O_RDWR' undeclared (first use in this function) make[2]: *** [src/mpid/ch3/channels/mrail/src/gen2/rdma_iba_1sc.lo] Error 1 The full configure command was ./configure --prefix=/home/asmunder/mvapich2-2.0 --with-ib-libpath=/cvos/shared/apps/ofed/1.3.1/lib64/ --with-ib-include=/cvos/shared/apps/ofed/1.3.1/include --with-shared-memory=sysv --enable-libpci In the end I traced this down to lines 22 and 26 in rdma_iba_1sc.c , which is an #ifdef that only includes fcntl.h (containing O_CREAT et al) when the flag _SMP_LIMIC_ is defined. Obviously this flag was not defined in my case. I removed these two lines, and now configure/make works fine. Also, in the end, I found that this flag was not necessary, and that the correct and much simpler solution was to set the environment variable MV2_SHMEM_DIR to the correct path. Regards, Åsmund _______________________________________________ discuss mailing list [email protected]<mailto:[email protected]> To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss