Dear EasyBuilders,
Based on the problems that several people are seeing with Intel MPI 2019
update 1 (see also notes of the last EasyBuild conf call [1]), we
concluded that it's better to stick with Intel MPI 2018 update 4 for the
intel/2019a toolchain.
I will change the pull request accordingly soon.
For the Intel compilers and Intel MKL, we'll use the latest release
(2019 update 1).
As for foss/2019a: OpenMPI 4.0 dropped some old/'obscure' parts of MPI,
which seems to affect several libraries/tools, incl. ScaLAPACK, so we'll
stick to the latest OpenMPI 3.x release for the time being.
regards,
Kenneth
[1]
https://github.com/easybuilders/easybuild/wiki/Conference-call-notes-20190109#2019a-update-of-common-toolchains
On 08/01/2019 07:12, pramod kumbhar wrote:
Same experience on our systems : we encountered multiple issues,
specifically with libfabric (which is default with Intel MPI 2019).
-Pramod
On Mon, Jan 7, 2019 at 4:45 PM Alvarez, Damian <[email protected]
<mailto:[email protected]>> wrote:
A word of caution regarding Intel MPI 2019: They changed a lot of
things under the hood, and we have seen lots of issues in our
systems on relatively large jobs (1.5K+ MPI processes). Basically
most collective algorithms don't make it through. We have seen that
on 2 different InfiniBand systems, I am unsure about OmniPath, or
about the underlying cause (maybe libfabric issues?), but with Intel
MPI 2018 we haven't seen them.
Best,
Damian
On 07.01.19, 16:37, "[email protected]
<mailto:[email protected]> on behalf of Kenneth
Hoste" <[email protected]
<mailto:[email protected]> on behalf of
[email protected] <mailto:[email protected]>> wrote:
Dear EasyBuilders,
By tradition at the start of the year, I have started looking at
updating the 'foss' and 'intel' common toolchains, currently
for the
2019a update.
The plan is to include these in the upcoming EasyBuild v3.8.1
release,
which I hope to release in a couple of weeks.
Current proposals are:
* foss/2019a:
(see
https://github.com/easybuilders/easybuild-easyconfigs/pull/7371)
- GCC 8.2.0 + binutils 2.31.1 [LATEST for both]
- OpenMPI 3.1.3 (latest 3.x)
- OpenBLAS 0.3.5 [LATEST]
+ ScaLAPACK 2.0.2 [LATEST]
- FFTW 3.3.8 [LATEST]
=> There also is OpenMPI 4.0.0, but we generally stay away
from new
major version of a toolchain component for the common toolchains.
Does anyone have a detailed view on how OpenMPI v4.0.0
compares
to v3.1.3, and whether or not we should consider v4.0.0?
* intel/2019a
(see
https://github.com/easybuilders/easybuild-easyconfigs/pull/7372)
- Intel C/C++/Fortran compilers 2019.1.144 [LATEST]
(a.k.a. 2019 update 1, a.k.a. 19.0.1.144 according to "icc
-V")
on top of GCC 8.2.0 + binutils 2.31.1
- Intel MPI 2019.1.144 (a.k.a. 2019 update 1) [LATEST]
- Intel MKL 2019.1.144 (a.k.a. 2019 update 1) [LATEST]
=> Any positive/negative experiences with the latest version
of the
Intel tools, or any remarks that may be relevant to the version
we pick
for intel/2019a?
I'm currently testing these foss/2019a and intel/2019a
proposals with a
bunch of existing easyconfigs using the */2018b equivalent.
A couple of minor compilation problems popped up when compiling
with GCC
8.2.0 (for HDF5, NASM, ...), but they were resolved trivially
by simply
updating to the latest version of these dependencies.
The 2019a toolchain definitions will also be discussed during the
EasyBuild conf call this Wednesday (Jan 9th).
regards,
Kenneth
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