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Juan Galvez

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04/04/2019

02:36 PM Charm++ Bug #159: Some CkCallback types are not valid across checkpoint/restart
Regarding callbacks that use function pointers, we concluded in core meeting that we will disallow this use of callba...

03/26/2019

07:39 PM Charm++ Bug #2060: Communication performance degrades after succesive load balancing when migrating many ...
The reason why the performance gets progressively worse is not because it becomes more likely of this happening, but ...

03/25/2019

04:34 PM Charm++ Bug #2060: Communication performance degrades after succesive load balancing when migrating many ...
Here is what I think is happening:
When an object migrates, the old PE updates the location to point to the PE whe...

03/20/2019

02:24 PM Charm++ Bug #2060: Communication performance degrades after succesive load balancing when migrating many ...
The issue happens also with CMK_GLOBAL_LOCATION_UPDATE.
Also, I told this to Eric Mikida offline, but for the reco...
01:37 PM Charm++ Bug #2060: Communication performance degrades after succesive load balancing when migrating many ...
Eric Mikida wrote:
> How many chares are you using in this case? I know this debate has come up before, as to whethe...
10:28 AM Charm++ Bug #2060: Communication performance degrades after succesive load balancing when migrating many ...
I should add that in the test program, all chares have the same load, so the performance after load balancing should ...
10:13 AM Charm++ Bug #2060 (New): Communication performance degrades after succesive load balancing when migrating...
This was observed on Blue Waters, running on 128 physical nodes, with chares communicating in a stencil-like pattern ...

03/14/2019

02:08 PM Charm++ Feature #2058 (In Progress): Finish work on newLB branch and merge with master
01:24 PM Charm++ Feature #2058 (In Progress): Finish work on newLB branch and merge with master
Currently tracking tasks here:
https://docs.google.com/document/d/1Amt4JvkfqMAerUk2w4HdvAbB4ySi2lq9mXvhaqQ4ChI/edit?...

01/22/2019

09:02 PM Charm++ Bug #2045: Chare array broadcast messages don't appear to be freed by the runtime
One case that occurs to me that could be problematic is a typical implementation of Stochastic Gradient Descent commo...

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