Merge branch 'gdrcopy' into 'master'

NVIDIA GDRCopy

See merge request Pmodules/buildblocks!192

Libraries/GDRCopy/build

@@ -0,0 +1,13 @@
+#!/usr/bin/env modbuild
+
+pbuild::set_download_url "https://github.com/NVIDIA/gdrcopy/archive/v${V_MAJOR}.${V_MINOR}.tar.gz"
+pbuild::add_to_group 'Libraries'
+
+pbuild::install_docfiles README.md CHANGELOG.md LICENSE
+
+pbuild::compile_in_sourcetree
+
+pbuild::install() {
+  PKG_CONFIG_PATH="${PREFIX}" make prefix="${PREFIX}" CUDA="${CUDA_HOME}" all install
+}
+

Libraries/GDRCopy/files/variants.merlin6

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+GDRCopy/2.2.0     unstable     cuda/11.0.3  

Libraries/GDRCopy/modulefile

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+#%Module1.0
+
+module-whatis		"NVIDIA GDRCopy"
+module-url		"https://github.com/NVIDIA/gdrcopy"
+module-license		"$PREFIX/share/doc/GDRCopy/LICENSE"
+module-maintainer	"Marc Caubet Serrabou <marc.caubet@psi.ch>"
+
+module-help		"
+GDR COPY is a fast copy library from NVIDIA, used to transfer files 
+between the host and the GPU.  Communication libraries (MVAPICH2, UCX)
+can take advantage of GDRCopy. if available on the systems.
+
+While GPUDirect RDMA is meant for direct access to GPU memory from 
+third-party devices, it is possible to use these same APIs to create
+perfectly valid CPU mappings of the GPU memory.
+
+The advantage of a CPU driven copy is the very small overhead involved.
+That might be useful when low latencies are required.
+
+To use it, please check whether the GDR COPY module is loaded on the
+involed machines.
+  # lsmod | grep gdrdrv
+"