Hello Samuel Like I said in my earlier response, I have never tried this option. So I ran these tests on 1.4.2 now and apparently the behavior is same ie; the checkpoint creation time increases when I enable shared memory componentL
Is there any parameter that can be tuned to improve the performance? Regards Ananda ----------------------- Hi, Just to be clear - do you see similar checkpoint performance differences in 1.5rc6 and 1.4.2 with and without shared memory enabled? Thanks, -- Samuel K. Gutierrez Los Alamos National Laboratory On Sep 21, 2010, at 9:35 AM, <ananda.mudar_at_[hidden]> <ananda.mudar_at_[hidden] > wrote: > Hello Samuel > This problem seems to be resolved after I moved to r23781. However, > I see another discrepancy in checkpoint image creation time when I > disable shared memory (--mca btl self,tcp,openib) vs using it. I > mean the time to create checkpoint image for this simple program is > about 0.4 seconds if I disable shared memory while it is close to > 6.5 seconds when I use shared memory component. I have not seen this > behavior earlier. Do I have to tune any other parameter to reduce > the time? > Thanks > Ananda > Hi Ananda, > > This issue should be resolved in r23781. Please let me know if it is > not. > > Thanks! > > -- > Samuel K. Gutierrez > Los Alamos National Laboratory > On Sep 20, 2010, at 11:26 AM, <ananda.mudar_at_[hidden]> > <ananda.mudar_at_[hidden] > > wrote: > > I have used following options to build: > > ./configure CC=/usr/bin/gcc CXX=/usr/bin/c++ F77=/usr/bin/gfortran > > FC=/usr/bin/gfortran --prefix /users/amudar/openmpi-1.7 --with-tm=/ > > usr/local/pbs --with-openib --with-threads=posix --enable-mpi- > thread- > > multiple --enable-ft-thread --enable-debug --with-ft=cr --with- > blcr=/ > > usr/blcr --with-blcr-libdir=/usr/blcr/lib > > > > Alsop please note that this is with r23756 build. > > > > Let me know if you need any other information. > > > > Thanks > > Ananda > > Let me take a look at it. How did you configure your build? > > Thanks, > > > > -- > > Samuel K. Gutierrez > > Los Alamos National Laboratory > > On Sep 20, 2010, at 10:14 AM, <ananda.mudar_at_[hidden]> > > <ananda.mudar_at_[hidden] > > > wrote: > > > Hi > > > > > > I believe the new common shared memory component was committed to > > > the trunk sometime towards the later part of August. I had not > tried > > > this trunk version until last week and I have seen some > discrepancy > > > with this component specifically related to checkpoint > > > functionality. I am not able to checkpoint any program with the > > > latest trunk version. Am I missing something here? Should I be > using > > > any other options to enable checkpoint functionality for shared > > > memory component? > > > > > > However if I disable shared memory component and use only self, > tcp, > > > and openib (--mca btl self,tcp,openib), I can checkpoint > > > successfully!! > > > > > > Following are the options I have used with mpirun: > > > > > > mpirun -am ft-enable-cr --mca opal_cr_enable_timer 1 --mca > > > sstore_stage_global_is_shared 1 --mca > > > sstore_base_global_snapshot_dir /scratch/hpl005/UIT_test/amudar/ > FWI > > > --mca mpi_paffinity_alone 1 -np 32 -hostfile hostfile-32 ../ > > hellompi > > > > > > Please note that hellompi is a very simple program without any > > > collective calls. When I issue checkpoint, this program fails with > > > the following messages: > > > > > > hplcnlj158:13937] Signal: Segmentation fault (11) > > > [hplcnlj158:13937] Signal code: Address not mapped (1) > > > [hplcnlj158:13937] Failing at address: 0x2aaa00000001 > > > [hplcnlj158:13937] [ 0] /lib64/libpthread.so.0 [0x2b4019a064c0] > > > [hplcnlj158:13937] [ 1] /users/amudar/openmpi-1.7/lib/ > > > libmca_common_sm.so.0(mca_common_sm_param_register+0x262) > > > [0x2aaaad96628a] > > > [hplcnlj158:13937] [ 2] /users/amudar/openmpi-1.7/lib/openmpi/ > > > mca_btl_sm.so [0x2aaaaf0a55e8] > > > [hplcnlj158:13937] [ 3] /users/amudar/openmpi-1.7/lib/libmpi.so.0 > > > [0x2b4018c3c11b] > > > [hplcnlj158:13937] [ 4] /users/amudar/openmpi-1.7/lib/libmpi.so. > > > 0(mca_base_components_open+0x3ef) [0x2b4018c3b70b] > > > [hplcnlj158:13937] [ 5] /users/amudar/openmpi-1.7/lib/libmpi.so. > > > 0(mca_btl_base_open+0xfd) [0x2b4018b620fe] > > > [hplcnlj158:13937] [ 6] /users/amudar/openmpi-1.7/lib/openmpi/ > > > mca_bml_r2.so [0x2aaaadd9e4fb] > > > [hplcnlj158:13937] [ 7] /users/amudar/openmpi-1.7/lib/openmpi/ > > > mca_pml_ob1.so [0x2aaaae5fa429] > > > [hplcnlj158:13937] [ 8] /users/amudar/openmpi-1.7/lib/openmpi/ > > > mca_pml_crcpw.so [0x2aaaadfadce6] > > > [hplcnlj158:13937] [ 9] /users/amudar/openmpi-1.7/lib/libmpi.so.0 > > > [0x2b4018b01a0d] > > > [hplcnlj158:13937] [10] /users/amudar/openmpi-1.7/lib/libmpi.so. > > > 0(ompi_cr_coord+0xc0) [0x2b4018b017ba] > > > [hplcnlj158:13937] [11] /users/amudar/openmpi-1.7/lib/libmpi.so. > > > 0(opal_cr_inc_core_recover+0xed) [0x2b4018c0efab] > > > [hplcnlj158:13937] [12] /users/amudar/openmpi-1.7/lib/openmpi/ > > > mca_snapc_full.so [0x2aaaabd280fc] > > > [hplcnlj158:13937] [13] /users/amudar/openmpi-1.7/lib/libmpi.so. > > > 0(opal_cr_test_if_checkpoint_ready+0x11b) [0x2b4018c0ecd3] > > > [hplcnlj158:13937] [14] /users/amudar/openmpi-1.7/lib/libmpi.so.0 > > > [0x2b4018c0f6e7] > > > [hplcnlj158:13937] [15] /lib64/libpthread.so.0 [0x2b40199fe367] > > > [hplcnlj158:13937] [16] /lib64/libc.so.6(clone+0x6d) > > [0x2b4019ce5f7d] > > > [hplcnlj158:13937] *** End of error message *** > > > [hplcnlj161:00637] *** Process received signal *** > > > [hplcnlj161:00637] Signal: Segmentation fault (11) > > > [hplcnlj161:00637] Signal code: Address not mapped (1) > > > [hplcnlj161:00637] Failing at address: 0x2aaa00000001 > > > [hplcnlj161:00649] *** Process received signal *** > > > [hplcnlj161:00649] Signal: Segmentation fault (11) > > > [hplcnlj161:00649] Signal code: Address not mapped (1) > > > [hplcnlj161:00649] Failing at address: 0x2aaa00000001 > > > /users/amudar/Fix_for_pidinuse/cr_restart: line 5: 14012 > > > Segmentation fault /usr/blcr/bin/cr_restart --no-restore-pid > > "$@" > > > [hplcnlj161:00643] *** Process received signal *** > > > [hplcnlj161:00643] Signal: Segmentation fault (11) > > > [hplcnlj161:00643] Signal code: Address not mapped (1) > > > [hplcnlj161:00643] Failing at address: 0x2aaa00000001 > > > [hplcnlj161:00640] *** Process received signal *** > > > [hplcnlj161:00640] Signal: Segmentation fault (11) > > > [hplcnlj161:00640] Signal code: Address not mapped (1) > > > [hplcnlj161:00640] Failing at address: 0x2aaa00000001 > > > [hplcnlj161:00636] *** Process received signal *** > > > [hplcnlj161:00652] *** Process received signal *** > > > [hplcnlj161:00652] Signal: Segmentation fault (11) > > > [hplcnlj161:00652] Signal code: Address not mapped (1) > > > [hplcnlj161:00652] Failing at address: 0x2aaa00000001 > > > [hplcnlj161:00636] Signal: Segmentation fault (11) > > > [hplcnlj161:00636] Signal code: Address not mapped (1) > > > [hplcnlj161:00636] Failing at address: 0x2aaa00000001 > > > [hplcnlj161:00637] [ 0] /lib64/libpthread.so.0 [0x2b86c74694c0] > > > [hplcnlj161:00637] [ 1] /users/amudar/openmpi-1.7/lib/ > > > libmca_common_sm.so.0(mca_common_sm_param_register+0x262) > > > [0x2aaaad96628a] > > > [hplcnlj161:00637] [ 2] /users/amudar/openmpi-1.7/lib/openmpi/ > > > mca_btl_sm.so [0x2aaaaf0a55e8] > > > [hplcnlj161:00637] [ 3] /users/amudar/openmpi-1.7/lib/libmpi.so.0 > > > [0x2b86c669f11b] > > > [hplcnlj161:00637] [ 4] /users/amudar/openmpi-1.7/lib/libmpi.so. > > > 0(mca_base_components_open+0x3ef) [0x2b86c669e70b] > > > [hplcnlj161:00637] [ 5] /users/amudar/openmpi-1.7/lib/libmpi.so. > > > 0(mca_btl_base_open+0xfd) [0x2b86c65c50fe] > > > [hplcnlj161:00637] [ 6] /users/amudar/openmpi-1.7/lib/openmpi/ > > > mca_bml_r2.so [0x2aaaadd9e4fb] > > > [hplcnlj161:00637] [ 7] /users/amudar/openmpi-1.7/lib/openmpi/ > > > mca_pml_ob1.so [0x2aaaae5fa429] > > > [hplcnlj161:00637] [ 8] /users/amudar/openmpi-1.7/lib/openmpi/ > > > mca_pml_crcpw.so [0x2aaaadfadce6] > > > [hplcnlj161:00637] [ 9] /users/amudar/openmpi-1.7/lib/libmpi.so.0 > > > [0x2b86c6564a0d] > > > [hplcnlj161:00637] [10] /users/amudar/openmpi-1.7/lib/libmpi.so. > > > 0(ompi_cr_coord+0xc0) [0x2b86c65647ba] > > > [hplcnlj161:00637] [11] /users/amudar/openmpi-1.7/lib/libmpi.so. > > > 0(opal_cr_inc_core_recover+0xed) [0x2b86c6671fab] > > > [hplcnlj161:00637] [12] /users/amudar/openmpi-1.7/lib/openmpi/ > > > mca_snapc_full.so [0x2aaaabd280fc] > > > [hplcnlj161:00637] [13] /users/amudar/openmpi-1.7/lib/libmpi.so. > > > 0(opal_cr_test_if_checkpoint_ready+0x11b) [0x2b86c6671cd3] > > > [hplcnlj161:00637] [14] /users/amudar/openmpi-1.7/lib/libmpi.so.0 > > > [0x2b86c66726e7] > > > [hplcnlj161:00637] [15] /lib64/libpthread.so.0 [0x2b86c7461367] > > > [hplcnlj161:00637] [16] /lib64/libc.so.6(clone+0x6d) > > [0x2b86c7748f7d] > > > [hplcnlj161:00637] *** End of error message *** > > > [hplcnlj161:00649] [ 0] /lib64/libpthread.so.0 [0x2b7bfa6204c0] > > > [hplcnlj161:00649] [ 1] /users/amudar/openmpi-1.7/lib/ > > > libmca_common_sm.so.0(mca_common_sm_param_register+0x262) > > > [0x2aaaad96628a] > > > [hplcnlj161:00649] [ 2] /users/amudar/openmpi-1.7/lib/openmpi/ > > > mca_btl_sm.so [0x2aaaaf0a55e8] > > > [hplcnlj161:00649] [ 3] /users/amudar/openmpi-1.7/lib/libmpi.so.0 > > > [0x2b7bf985611b] > > > [hplcnlj161:00649] [ 4] /users/amudar/openmpi-1.7/lib/libmpi.so. > > > 0(mca_base_components_open+0x3ef) [0x2b7bf985570b] > > > [hplcnlj161:00649] [ 5] /users/amudar/openmpi-1.7/lib/libmpi.so. > > > 0(mca_btl_base_open+0xfd) [0x2b7bf977c0fe] > > > [hplcnlj161:00649] [ 6] /users/amudar/openmpi-1.7/lib/openmpi/ > > > mca_bml_r2.so [0x2aaaadd9e4fb] > > > [hplcnlj161:00649] [ 7] /users/amudar/openmpi-1.7/lib/openmpi/ > > > mca_pml_ob1.so [0x2aaaae5fa429] > > > [hplcnlj161:00649] [ 8] /users/amudar/openmpi-1.7/lib/openmpi/ > > > mca_pml_crcpw.so [0x2aaaadfadce6] > > > [hplcnlj161:00649] [ 9] /users/amudar/openmpi-1.7/lib/libmpi.so.0 > > > [0x2b7bf971ba0d] > > > [hplcnlj161:00649] [10] /users/amudar/openmpi-1.7/lib/libmpi.so. > > > 0(ompi_cr_coord+0xc0) [0x2b7bf971b7ba] > > > [hplcnlj161:00649] [11] /users/amudar/openmpi-1.7/lib/libmpi.so. > > > 0(opal_cr_inc_core_recover+0xed) [0x2b7bf9828fab] > > > [hplcnlj161:00649] [12] /users/amudar/openmpi-1.7/lib/openmpi/ > > > mca_snapc_full.so [0x2aaaabd280fc] > > > [hplcnlj161:00649] [13] /users/amudar/openmpi-1.7/lib/libmpi.so. > > > 0(opal_cr_test_if_checkpoint_ready+0x11b) [0x2b7bf9828cd3] > > > [hplcnlj161:00649] [14] /users/amudar/openmpi-1.7/lib/libmpi.so.0 > > > [0x2b7bf98296e7] > > > [hplcnlj161:00649] [15] /lib64/libpthread.so.0 [0x2b7bfa618367] > > > [hplcnlj161:00649] [16] /lib64/libc.so.6(clone+0x6d) > > [0x2b7bfa8fff7d] > > > [hplcnlj161:00649] *** End of error message *** > > > > > > > > > Thanks > > > Ananda > > > > > > Ananda B Mudar, PMP > > > Senior Technical Architect > > > Wipro Technologies > > > Ph: 972 765 8093 begin_of_the_skype_highlighting 972 765 8093 end_of_the_skype_highlighting 972 765 8093 > > > ananda.mudar_at_[hidden] > > > > > > Please do not print this email unless it is absolutely necessary. > > > > > > The information contained in this electronic message and any > > > attachments to this message are intended for the exclusive use of > > > the addressee(s) and may contain proprietary, confidential or > > > privileged information. 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The company accepts no liability for any damage > > caused by any virus transmitted by this email. > > > > www.wipro.com > > > > _______________________________________________ > > devel mailing list > > devel_at_[hidden] > > http://www.open-mpi.org/mailman/listinfo.cgi/devel > > > Ananda B Mudar, PMP > Senior Technical Architect > Wipro Technologies > Ph: 972 765 8093 > ananda.mudar_at_[hidden] > > Please do not print this email unless it is absolutely necessary. > > The information contained in this electronic message and any > attachments to this message are intended for the exclusive use of > the addressee(s) and may contain proprietary, confidential or > privileged information. If you are not the intended recipient, you > should not disseminate, distribute or copy this e-mail. Please > notify the sender immediately and destroy all copies of this message > and any attachments. > > WARNING: Computer viruses can be transmitted via email. 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