[petsc-users] Scalability of PETSc on vesta.alcf

[Jed Brown]

Roc Wang <pengxwang at hotmail.com> writes:
>   I tried c16 for 1024 ranks and 2048 ranks, but the job cannot run
>   successfully. It seems the job was started but the program didn't
>   execute. Please take a look at the attached log file for 1024 with
>   c16 mode. Is this because some environment parameters I didn't set
>   right? Actually, the same program is only able to run with 1024
>   ranks in c1, c2 and c32, c64 modes and 2048 ranks in c64 mode.

You have non-scalable "Generate Vector" and VecView (the latter maybe
because you don't use MPI-IO?).  It is probably failing at this step.

| qsub -A SUGAR -t 00:10:00 -n 512 --proccount 2048 --mode script ./vesta.job

I thought you said you were trying c16?
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 835 bytes
Desc: not available
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20140120/af3c83ba/attachment.pgp>