[Users] meeting minutes for 2017-03-13

[Roland Haas]

Present: Frank, Eloisa, Roland, Peter, Jonah, Erik, Vassili, Bhavesh,
Ian

Roland asked about overlap of communication and computation during SYNC
statements. 
* communication buffers are all data between pairs of processors
* multi-threaded MPI may be required to keep a thread inside of MPI all
  the time for systems where MPI does no work unless a caller is inside
  its code. Could use self-compiled OpenMPI on blue waters or
  multi-threaded Cray MPI.
* suggestions to use mpi trace
* stand-alone test may be best
* need to determine that there is actually a benefit of this overlap

Piraha parser:
* currently stop parsing a CCL file at the first CCL syntax error but
  will parse multiple files for errors.
* since syntax errors in piraha include things like mis-spelling
  CCTK_REAL Roland thinks that aborting at syntax errors is bad also
  since typically one will modify only a single CCL files when eg
  working on a thorn
* this is however larger than the original intent of the ticket, which
  was about some specific files not parsing
* Roland will provide a set of ccl files that should parse but do not
  parse

testsuite problems:
* see issues on Nebula Haswel
* see issues on Roland's laptop Kaby Lake
* see issues on Ian's laptop/workstation (Kaby lake)

Workshop this year:
* no date set yet

Yours,
Roland

-- 
My email is as private as my paper mail. I therefore support encrypting
and signing email messages. Get my PGP key from http://pgp.mit.edu .
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 195 bytes
Desc: OpenPGP digital signature
Url : http://lists.einsteintoolkit.org/pipermail/users/attachments/20170313/5ffa9cea/attachment.bin