1
0
mirror of https://github.com/paboyle/Grid.git synced 2024-11-10 15:55:37 +00:00
Commit Graph

10 Commits

Author SHA1 Message Date
Azusa Yamaguchi
98de1cbb6a Optimised version of rectangle term staples.
~3.4x faster than the naive.
2015-12-29 19:22:59 +00:00
Azusa Yamaguchi
78c4e862ef Plaq, Rectangle, Iwasaki, Symanzik and DBW2 workign and HMC regresses to http://arxiv.org/pdf/hep-lat/0610075.pdf 2015-12-28 16:38:31 +00:00
Peter Boyle
aa52fdadcc Global edit on HMC sector -- making GaugeField a template parameter and
preparing to pass integrator, smearing, bc's as policy classes to hmc.

Propose to unify "integrator" and integrator algorithm in a base/derived
way to override step. Want to read through ForceGradient to ensure
that abstraction covers the force gradient case.
2015-08-30 12:18:34 +01:00
Peter Boyle
dc814f30da Binary IO file for generic Grid array parallel I/O.
Number of IO MPI tasks can be varied by selecting which
dimensions use parallel IO and which dimensions use Serial send to boss
I/O.

Thus can neck down from, say 1024 nodes = 4x4x8x8 to {1,8,32,64,128,256,1024} nodes
doing the I/O.

Interpolates nicely between ALL nodes write their data, a single boss per time-plane
in processor space [old UKQCD fortran code did this], and a single node doing all I/O.

Not sure I have the transfer sizes big enough and am not overly convinced fstream
is guaranteed to not give buffer inconsistencies unless I set streambuf size to zero.

Practically it has worked on 8 tasks, 2x1x2x2 writing /cloning NERSC configurations
on my MacOS + OpenMPI and Clang environment.

It is VERY easy to switch to pwrite at a later date, and also easy to send x-strips around from
each node in order to gather bigger chunks at the syscall level.

That would push us up to the circa 8x 18*4*8 == 4KB size write chunk, and by taking, say, x/y non
parallel we get to 16MB contiguous chunks written in multi 4KB transactions
per IOnode in 64^3 lattices for configuration I/O.

I suspect this is fine for system performance.
2015-08-26 13:40:29 +01:00
neo
9adaeb061a More NEON functionalities 2015-07-21 11:52:15 +09:00
Peter Boyle
98c817df1b big commit fixing nocompiles in defective C++11 compilers (gcc, icpc). stared getting to
near the bleeding edge I guess
2015-06-30 15:03:11 +01:00
Azusa Yamaguchi
4e7300b68d uninitialised bug fix 2015-06-16 14:07:05 +01:00
Azusa Yamaguchi
68b82ddd99 const safety 2015-06-14 00:59:50 +01:00
Azusa Yamaguchi
351c2905f5 Compile fix 2015-06-05 10:29:42 +01:00
Azusa Yamaguchi
94ea84d83f Adding some wilson loop support 2015-06-05 10:02:36 +01:00