I'm running on Kraken and am currently working with 4320 cores. I get the following error in KSPSolve. <br><br>[2711]: (/ptmp/ulib/mpt/nightly/5.3/120211/mpich2/src/mpid/cray/src/adi/ptldev.c:2046) PtlMEInsert failed with error : PTL_NO_SPACE<br>
MHV_exe: /ptmp/ulib/mpt/nightly/5.3/120211/mpich2/src/mpid/cray/src/adi/ptldev.c:2046: MPIDI_CRAY_ptldev_desc_pkt: Assertion `0' failed.<br>forrtl: error (76): Abort trap signal<br>Image              PC                Routine            Line        Source<br>
MHV_exe            00000000014758CB  Unknown               Unknown  Unknown<br>MHV_exe            000000000182ED43  Unknown               Unknown  Unknown<br>MHV_exe            0000000001829460  Unknown               Unknown  Unknown<br>
MHV_exe            00000000017EDE3E  Unknown               Unknown  Unknown<br>MHV_exe            00000000017B3FE6  Unknown               Unknown  Unknown<br>MHV_exe            00000000017B3738  Unknown               Unknown  Unknown<br>
MHV_exe            00000000017B2B12  Unknown               Unknown  Unknown<br>MHV_exe            00000000017B428F  Unknown               Unknown  Unknown<br>MHV_exe            000000000177FCE1  Unknown               Unknown  Unknown<br>
MHV_exe            0000000001590A43  Unknown               Unknown  Unknown<br>MHV_exe            00000000014F909B  Unknown               Unknown  Unknown<br>MHV_exe            00000000014FF53B  Unknown               Unknown  Unknown<br>
MHV_exe            00000000014A4E25  Unknown               Unknown  Unknown<br>MHV_exe            0000000001487D57  Unknown               Unknown  Unknown<br>MHV_exe            000000000147F726  Unknown               Unknown  Unknown<br>
MHV_exe            000000000137A8D3  Unknown               Unknown  Unknown<br>MHV_exe            0000000000E97BF2  Unknown               Unknown  Unknown<br>MHV_exe            000000000098EAF1  Unknown               Unknown  Unknown<br>
MHV_exe            0000000000989C20  Unknown               Unknown  Unknown<br>MHV_exe            000000000097A9C2  Unknown               Unknown  Unknown<br>MHV_exe            000000000082FF2D  axbsolve_                 539  PetscObjectsOperations.F90<br>
<br>This is somewhere in KSPSolve. Is there an MPICH environment variable that needs tweaking? I couldn't really find much on this particular error.<br>The solver is BiCGStab with Hypre as a preconditioner. <br><br>-ksp_type bcgsl -pc_type hypre -pc_hypre_type boomeramg -ksp_monitor<br>
<br>Thanks,<br><br>John<br>