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Thomas Quinn

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02/01/2018

04:40 PM Charm++ Bug #1786: Assertion "thisDim < thatDim" failed in file cklocation.C line 2880
Running after compiling with -fsanitize=address gives:
Domain decomposition...SFC Peano-Hilbert
Created 128 piece...
04:18 PM Charm++ Bug #1786: Assertion "thisDim < thatDim" failed in file cklocation.C line 2880
param, data and job file are in:
https://drive.google.com/open?id=1AU7P4hgMrVnRpLBDbFoP4h-wexKxDjwA
09:19 AM Charm++ Bug #1786: Assertion "thisDim < thatDim" failed in file cklocation.C line 2880
This seems to be a memory corruption issue: I tried a smaller problem, and I got malloc failures:
free(): invalid po...

01/31/2018

09:42 PM Charm++ Bug #1786: Assertion "thisDim < thatDim" failed in file cklocation.C line 2880
Machine: "Piz Daint".
Modules:
Currently Loaded Modulefiles:
1) modules/3.2.10.6
2) eproxy/2.0.16-6.0.4.1_3.1...
08:41 PM Charm++ Bug #1786: Assertion "thisDim < thatDim" failed in file cklocation.C line 2880
Change https://charm.cs.illinois.edu/gerrit/#/c/3482/
seems to have introduced this bug.

01/30/2018

03:58 PM Charm++ Bug #1786 (Merged): Assertion "thisDim < thatDim" failed in file cklocation.C line 2880
So far, this only happens when I @"build ChaNGa mpi-crayxc smp -O2"@. (A gni-crayxc smp build works.)
A print state...

11/03/2017

08:44 PM Charm++ Bug #1715: 20% slowdown in ChaNGa after commit 159fd36fc
I've tested the version with the problem above. The short-circuit now actually improves performance!

11/01/2017

03:33 PM Charm++ Bug #1715: 20% slowdown in ChaNGa after commit 159fd36fc
And one more data point: if I use "NullLB", tree building speeds up by a factor of 3!
03:15 PM Charm++ Bug #1715: 20% slowdown in ChaNGa after commit 159fd36fc
I did make a "comm" projections plot, and I think I am seeing what Sanjay is suggesting: a message goes to a comm thr...

10/26/2017

11:57 PM Charm++ Bug #1715: 20% slowdown in ChaNGa after commit 159fd36fc
I don't know if this helps, but I notice an even bigger slow down in the "tree building" phase of ChaNGa: nearly a fa...

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