[OMPI users] Using Open MPI with multiple versions of GCC and G++
Hello, I'm a senior year Computer Science student working on Parallel Clustering Algorithms at BITS Pilani, India. I have a few questions about using mpicc and mpicxx with multiple versions of gcc / g++. I am using Ubuntu 12.04 equipped with gcc 4.6.4. The currently installed mpicc is bound to gcc4.6.4. I want mpicc to be bound with gcc-5 that I have installed in my pc. Is there a way to do the binding to gcc as a compiler flag or something of that sort. PS: Please do reply if you have a solution. I am unable to run a hybrid code on my pc because of this issue. Regards, Aditya. ___ users mailing list users@lists.open-mpi.org https://rfd.newmexicoconsortium.org/mailman/listinfo/users
[OMPI users] Query related to OMPI_MCA_ns_nds_vpid environment variable
Hi, I am working on a cluster and want to run 12 processes for standard Linpack test to measure its performance. I have made appropriate changes to HPL.dat input file. However, I need to set OMPI_MCA_ns_nds_vpid and RANK environment variables for execution. I would be very glad to receive some guidance on values of these variables and their use. Best Regards, Aditya Vasal Software Engg | Semiconductor Solutions Group |KPIT Cummins Infosystems Ltd. | +91 99 70 168 581 |aditya.va...@kpitcummins.com |www.kpitcummins.com http://www.kpitcummins.com/>
[OMPI users] Query regarding OMPI_MCA_ns_nds_vpid env variable
Hi, I am using Linpack test on SLES 10 using openmpi-1.2.6. However, I am not getting expected output, i would be glad to receive some information regarding the environment variable OMPI_MCA_ns_nds_vpid and it's use. Best Regards, Aditya Vasal Software Engg | Semiconductor Solutions Group |KPIT Cummins Infosystems Ltd. | +91 99 70 168 581 |aditya.va...@kpitcummins.com |www.kpitcummins.com http://www.kpitcummins.com/>
[OMPI users] Need some help regarding Linpack execution
Hi, I want to perform LINPACK test on my m/c, I have only 1 GB RAM on the m/c where I want to run 12 parallel Linpack processes on SLES 10. I am using of Mpich-1.2.7p1. (Mpich is built with -rsh=ssh option) I have modified HPL.dat accordingly, P = 3 Q = 4(so as to make PxQ = 12) N = 8640 (so as to make use of only 56% of available memory and leave rest for host processes) NB = 11520 I have also set ulimit -l unlimited.. Created a machine.list file by specifying my m/c's IP address 12 times. (So as to execute all 12 processes on the same m/c) and using GotoBLAS for the Linpack execution Execution command: mpirun -np 12 -machinefile machine.list xhpl Upon execution, I get following error: HPL ERROR from process # 0, on line 419 of function HPL_pdinfo: >>> Need at least 12 processes for these tests <<< Please guide me where am I going wrong Best Regards, Aditya Vasal Software Engg | Semiconductor Solutions Group |KPIT Cummins Infosystems Ltd. | +91 99 70 168 581 |aditya.va...@kpitcummins.com |www.kpitcummins.com http://www.kpitcummins.com/>
[OMPI users] Query regarding OMPI_MCA_ns_nds_vpid env variable
Hi, I would be glad to receive some information regarding the environment variable OMPI_MCA_ns_nds_vpid 1> It's Importance 2> It's Use Thanks, Aditya Vasal
