On Saturday, 14 April 2018 1:33:13 AM AEST Mahmood Naderan wrote:
> I tried with one of the NAS benchmarks (BT) with 121 threads since the
> number of cores should be square.
That's an IO benchmark, not going to help you for this. You need something
that is compute bound & comms intensive to se
The output is certainly not enough to judge, but my first guess would be
that your MPI (what is it btw?) is not support PMI that is enabled in Slurm.
Note also, that Slurm now supports 3 ways of doing PMI and from the info
that you have provided it is not clear which one you are using.
To judge wit
I tried with one of the NAS benchmarks (BT) with 121 threads since the
number of cores should be square. With srun, I get
WARNING: compiled for 121 processes
Number of active processes: 1
0 1 408 408 408
Problem size too big for compiled arra
On 13/4/18 7:19 pm, Mahmood Naderan wrote:
I see some old posts on the web about performance comparison of srun
vs. mpirun. Is that still an issue?
Just running an MPI hello world program is not going to test that.
You need to run an actual application that is doing a lot of
computation and c
On Fri, 13 Apr 2018 13:49:56 +0430
Mahmood Naderan wrote:
> Hi,
> I see some old posts on the web about performance comparison of srun
> vs. mpirun. Is that still an issue? Both the following scripts works
> for test programs and surely the performance concerns is not visible
> here.
...
> #SBAT
Hi,
I see some old posts on the web about performance comparison of srun
vs. mpirun. Is that still an issue? Both the following scripts works
for test programs and surely the performance concerns is not visible
here.
#!/bin/bash
#SBATCH --job-name=hello_mpi
#SBATCH --output=hellompi.log
#SBATCH --
