diff --git a/Golden_Repo/i/imkl/imkl-2021.4.0-iompi-2021b.eb b/Golden_Repo/i/imkl/imkl-2021.4.0-iompi-2021b.eb
new file mode 100644
index 0000000000000000000000000000000000000000..1cd2feaffaae4ebfb393a5fbdd16cc1bd009f49b
--- /dev/null
+++ b/Golden_Repo/i/imkl/imkl-2021.4.0-iompi-2021b.eb
@@ -0,0 +1,15 @@
+name = 'imkl'
+version = '2021.4.0'
+
+homepage = 'https://software.intel.com/content/www/us/en/develop/tools/oneapi/components/onemkl.html'
+description = "Intel oneAPI Math Kernel Library"
+
+toolchain = {'name': 'iompi', 'version': '2021b'}
+
+# see https://software.intel.com/content/www/us/en/develop/articles/oneapi-standalone-components.html
+source_urls = [
+    'https://registrationcenter-download.intel.com/akdlm/irc_nas/18222/']
+sources = ['l_onemkl_p_%(version)s.640_offline.sh']
+checksums = ['9ad546f05a421b4f439e8557fd0f2d83d5e299b0d9bd84bdd86be6feba0c3915']
+
+moduleclass = 'numlib'
diff --git a/Golden_Repo/i/iomkl/iomkl-2021b.eb b/Golden_Repo/i/iomkl/iomkl-2021b.eb
new file mode 100644
index 0000000000000000000000000000000000000000..e32424be307e035df4e6c95b2ca75848505c198c
--- /dev/null
+++ b/Golden_Repo/i/iomkl/iomkl-2021b.eb
@@ -0,0 +1,24 @@
+easyblock = 'Toolchain'
+
+name = 'iomkl'
+version = '2021b'
+versionsuffix = ''
+
+local_intelversion = '2021.4.0'
+local_intelsuffix = '-GCC-11.2.0'
+
+homepage = ''
+description = """iomkl provides Intel C/C++ and Fortran compilers, ParaStationMPI & Intel MKL.
+"""
+
+toolchain = SYSTEM
+
+dependencies = [
+    ('intel-compilers', local_intelversion, local_intelsuffix),
+    ('OpenMPI', '4.1.1', versionsuffix,
+     ('intel-compilers', local_intelversion + local_intelsuffix)),
+    ('imkl', local_intelversion, versionsuffix, ('iompi', version)),
+]
+
+
+moduleclass = 'toolchain'
diff --git a/Golden_Repo/i/iompi/iompi-2021b.eb b/Golden_Repo/i/iompi/iompi-2021b.eb
new file mode 100644
index 0000000000000000000000000000000000000000..a4d619aa0e1f5b620abeda88ddfa87aaa6f5ee85
--- /dev/null
+++ b/Golden_Repo/i/iompi/iompi-2021b.eb
@@ -0,0 +1,20 @@
+easyblock = "Toolchain"
+
+name = 'iompi'
+version = '2021b'
+
+homepage = 'http://software.intel.com/en-us/intel-cluster-toolkit-compiler/'
+description = """Intel C/C++ and Fortran compilers, alongside ParaStationMPI.
+"""
+
+toolchain = SYSTEM
+
+local_compver = '2021.4.0'
+local_gccsuffix = '-GCC-11.2.0'
+dependencies = [
+    ('intel-compilers', '%s%s' % (local_compver, local_gccsuffix)),
+    ('OpenMPI', '4.1.1', '', ('intel-compilers', '%s%s' %
+                              (local_compver, local_gccsuffix))),
+]
+
+moduleclass = 'toolchain'
diff --git a/Golden_Repo/o/OpenMPI/OpenMPI-4.1.1-intel-compilers-2021.4.0-GCC-11.2.0.eb b/Golden_Repo/o/OpenMPI/OpenMPI-4.1.1-intel-compilers-2021.4.0-GCC-11.2.0.eb
new file mode 100644
index 0000000000000000000000000000000000000000..efd0e0566c56cb6afdd35a3ff6b5ddeaad879c5f
--- /dev/null
+++ b/Golden_Repo/o/OpenMPI/OpenMPI-4.1.1-intel-compilers-2021.4.0-GCC-11.2.0.eb
@@ -0,0 +1,61 @@
+easyblock = 'ConfigureMake'
+
+name = 'OpenMPI'
+version = '4.1.1'
+
+homepage = 'https://www.open-mpi.org/'
+description = """The Open MPI Project is an open source MPI-3 implementation."""
+
+toolchain = {'name': 'intel-compilers', 'version': '2021.4.0-GCC-11.2.0'}
+toolchainopts = {'pic': True}
+
+source_urls = [
+    'https://www.open-mpi.org/software/ompi/v%(version_major_minor)s/downloads']
+sources = [SOURCELOWER_TAR_BZ2]
+checksums = ['e24f7a778bd11a71ad0c14587a7f5b00e68a71aa5623e2157bafee3d44c07cda']
+
+osdependencies = [
+    # needed for --with-verbs
+    ('libibverbs-dev', 'libibverbs-devel', 'rdma-core-devel'),
+    # needed for --with-pmix
+    ('pmix-devel'),
+]
+
+builddependencies = [
+    ('Autotools', '20210726', '', SYSTEM),
+    ('pkg-config', '0.29.2'),
+]
+
+dependencies = [
+    ('zlib', '1.2.11'),
+    ('hwloc', '2.5.0'),
+    ('UCX', '1.11.2', '', SYSTEM),
+    ('CUDA', '11.4', '', SYSTEM),
+    ('libevent', '2.1.12'),
+]
+
+configopts = '--enable-shared '
+configopts += '--with-hwloc=$EBROOTHWLOC '  # hwloc support
+configopts += '--with-ucx=$EBROOTUCX '
+configopts += '--with-verbs '
+configopts += '--with-libevent=$EBROOTLIBEVENT '
+configopts += '--without-orte '
+configopts += '--without-psm2 '
+configopts += '--disable-oshmem '
+configopts += '--with-cuda=$EBROOTCUDA '
+configopts += '--with-ime=/opt/ddn/ime '
+configopts += '--with-gpfs '
+
+# to enable SLURM integration (site-specific)
+configopts += '--with-slurm --with-pmix=external --with-libevent=external --with-ompi-pmix-rte'
+
+local_libs = ["mpi_mpifh", "mpi", "ompitrace", "open-pal", "open-rte"]
+sanity_check_paths = {
+    'files': ["bin/%s" % local_binfile for local_binfile in ["ompi_info", "opal_wrapper"]] +
+             ["lib/lib%s.%s" % (local_libfile, SHLIB_EXT) for local_libfile in local_libs] +
+             ["include/%s.h" % x for x in ["mpi-ext", "mpif-config",
+                                           "mpif", "mpi", "mpi_portable_platform"]],
+    'dirs': [],
+}
+
+moduleclass = 'mpi'