Description of problem: I am not sure if this is a bug or working as expected. I wasn't able to run mvapich programs over tcp stack only. It can only run over infiniband stacks: # mpirun_rsh -np 2 dhcp71-141.rhts.bos.redhat.com dhcp71-142.rhts.bos.redhat.com /usr/lib64/mvapich/1.1.0-gcc/bin/mpitests-com MPI process terminated unexpectedly Abort signaled by rank 1: No ACTIVE ports found MPI process terminated unexpectedly Child exited abnormally! Killing remote processes...DONE # modprobe ib_mthca ; ifup ib0 # mpirun_rsh -np 2 dhcp71-141.rhts.bos.redhat.com dhcp71-142.rhts.bos.redhat.com /usr/lib64/mvapich/1.1.0-gcc/bin/mpitests-com ################################################################################ com Point-to-Point MPI Bandwidth and Latency Benchmark Version 1.4.0 Run at 10/17/08 17:37:01, with rank 0 on dhcp71-141.rhts.bos.redhat.com ################################################################################ Test Processes Op Size (bytes) Ops BW (MB) ----------------------------------------------------------------- Unidirectional 2 32 10 30.000 Unidirectional 2 64 10 97.778 Unidirectional 2 128 10 193.684 Unidirectional 2 256 10 378.182 Unidirectional 2 512 10 742.400 Unidirectional 2 1024 10 984.615 Unidirectional 2 2048 10 1488.980 Unidirectional 2 4096 10 1828.224 Unidirectional 2 8192 10 1454.730 Unidirectional 2 16384 10 332.670 Unidirectional 2 32768 10 442.812 Unidirectional 2 65536 10 527.029 Unidirectional 2 131072 10 577.537 Unidirectional 2 262144 10 621.636 Unidirectional 2 524288 10 637.936 Unidirectional 2 1048576 10 648.530 Unidirectional 2 2097152 10 649.504 Unidirectional 2 4194304 10 651.998 Unidirectional 2 8388608 10 653.362 Test Processes Op Size (bytes) Ops BW (MB) ----------------------------------------------------------------- Bidirectional 2 32 10 11.646 Bidirectional 2 64 10 25.108 Bidirectional 2 128 10 32.005 Bidirectional 2 256 10 57.528 Bidirectional 2 512 10 140.274 Bidirectional 2 1024 10 192.305 Bidirectional 2 2048 10 364.096 Bidirectional 2 4096 10 507.639 Bidirectional 2 8192 10 589.475 Bidirectional 2 16384 10 267.603 Bidirectional 2 32768 10 494.612 Bidirectional 2 65536 10 678.251 Bidirectional 2 131072 10 892.253 Bidirectional 2 262144 10 1017.344 Bidirectional 2 524288 10 1156.220 Bidirectional 2 1048576 10 1186.709 Bidirectional 2 2097152 10 1193.411 Bidirectional 2 4194304 10 1181.195 Bidirectional 2 8388608 10 1185.686 Test Processes Op Size (bytes) Ops Latency (us) ----------------------------------------------------------------- Latency 2 0 10 8.600 Max Unidirectional Bandwidth : 1828.22 for message size of 4096 bytes Max Bidirectional Bandwidth : 1193.41 for message size of 2097152 bytes ################################################################################ Test Parameters --------------- Process pair allocation : block MB size for BW calculation : 1000000 Barrier not included in measurement. Bandwidth calculated as sum of process bandwidths. MPI_Wtick returns 0.000010000 MPI_Wtime overhead 0.000000200 ################################################################################ Version-Release number of selected component (if applicable): mvapich-1.1.0-0.2931.3.el5 How reproducible: Everytime
See #466390 for the explanation. TCP is not supported since it's compiled with IB and it'll be release noted. *** This bug has been marked as a duplicate of bug 466390 ***