From 9ffc5b63f5006bb2b55a6a1e66540e014b27c595 Mon Sep 17 00:00:00 2001
From: Jan Siwiec <jan.siwiec@vsb.cz>
Date: Thu, 15 Feb 2024 09:03:48 +0100
Subject: [PATCH] Update file grace.md
---
docs.it4i/cs/guides/grace.md | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/docs.it4i/cs/guides/grace.md b/docs.it4i/cs/guides/grace.md
index a2fba21d7..3266a505d 100644
--- a/docs.it4i/cs/guides/grace.md
+++ b/docs.it4i/cs/guides/grace.md
@@ -17,6 +17,7 @@ where:
## Available Toolchains
The platform offers three toolchains:
+
- Standard GCC (as a module `ml GCC`)
- [NVHPC](https://developer.nvidia.com/hpc-sdk) (as a module `ml NVHPC`)
- [Clang for NVIDIA Grace](https://developer.nvidia.com/grace/clang) (installed in `/opt/nvidia/clang`)
@@ -38,6 +39,7 @@ for(int i = 0; i < 1000000; ++i) {
}
}
```
+
may emit scalar code for the inner loop leading to no vectorization being used at all.
### Clang (For Grace) Toolchain
@@ -73,6 +75,7 @@ The basic libraries (BLAS and LAPACK) are included in NVHPC toolchain and can be
### NVIDIA Performance Libraries
The [NVPL](https://developer.nvidia.com/nvpl) package includes more extensive set of libraries in both sequential and multi-threaded versions:
+
- BLACS: `-lnvpl_blacs_{lp64,ilp64}_{mpich,openmpi3,openmpi4,openmpi5}`
- BLAS: `-lnvpl_blas_{lp64,ilp64}_{seq,gomp}`
- FFTW: `-lnvpl_fftw`
@@ -112,6 +115,7 @@ ml OpenMPI
mpic++ -fast -fopenmp hello.cpp -o hello
OMP_PROC_BIND=close OMP_NUM_THREADS=4 mpirun -np 4 --map-by slot:pe=36 ./hello
```
+
In this configuration we run 4 ranks bound to one quarter of cores each with 4 OpenMP threads.
## Simple BLAS Application
--
GitLab