Minutes 2015-04-23

Participants

• Steve, Alexei, Carleton, Nuno, Alex, Thorsten, Mathias

Issues discussed

MILC interface changes

tracked in #220

• aim at next release
• not pressing right now but requires changes to MILC or
• defining a version 2 interface and keeping the old one for compatibility ?
• QDP interface should server as example

MILC clover issues

tracked in #224

• BiCG seems to converge but residual reported after inversion is bad (on the order of the estimate when missing clover term)
• inversions run with reliable updates in full double precision, 25 iterations w/ 15 reliable updates
• It is possible to pass clover coefficient and / or clover field
  • if clover field is NULL QUDA calculates it using the coefficient (and print that to its output)
• different convention ?
• Alexei will test inversion from qudainvert
• we need to check BiCG with fermilab residual, probably completely untested
• Wilson-Colver tests
• Alex tested Clover with CG
• Thorsten uses Clover from Chroma

Numa issues

tracked in #223

• Don will look into this

CUDA memcheck with MPI

tracked in #222

• seems like issues with getting pointer attributes within MPI
• Nuno tested and will close that issue w/ comments on details

Pull requests

* postponed to next call

Other news

• TML QCD interface from Mario Schroeck
  • probably still untested

Follow up in next call (May 7th)

• clover issues
• eigcg mixed precision with HISQ (Alexei reported and will create an issue to track this)
• numa issue status
• regression tests