OpenBLAS

Branch: develop

History

Mark Ryan 3b715e6162 Add autodetection for riscv64 Implement DYNAMIC_ARCH support for riscv64. Three cpu types are supported, riscv64_generic, riscv64_zvl256b, riscv64_zvl128b. The two non-generic kernels require CPU support for RVV 1.0 to function correctly. Detecting that a riscv64 device supports RVV 1.0 is a little complicated as there are some boards on the market that advertise support for V via hwcap but only support RVV 0.7.1, which is not binary compatible with RVV 1.0. The approach taken is to first try hwprobe. If hwprobe is not available, we fall back to hwcap + an additional check to distinguish between RVV 1.0 and RVV 0.7.1. Tested on a VM with VLEN=256, a CanMV K230 with VLEN=128 (with only the big core enabled), a Lichee Pi with RVV 0.7.1 and a VF2 with no vector. A compiler with RVV 1.0 support must be used to build OpenBLAS for riscv64 when DYNAMIC_ARCH=1. Signed-off-by: Mark Ryan <markdryan@rivosinc.com>	1 year ago
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Makefile	Add autodetection for riscv64	1 year ago

Mark Ryan 3b715e6162 Add autodetection for riscv64

Implement DYNAMIC_ARCH support for riscv64.  Three cpu types are
supported, riscv64_generic, riscv64_zvl256b, riscv64_zvl128b.
The two non-generic kernels require CPU support for RVV 1.0 to
function correctly.  Detecting that a riscv64 device supports
RVV 1.0 is a little complicated as there are some boards on the
market that advertise support for V via hwcap but only support
RVV 0.7.1, which is not binary compatible with RVV 1.0.  The
approach taken is to first try hwprobe.  If hwprobe is not
available, we fall back to hwcap + an additional check to distinguish
between RVV 1.0 and RVV 0.7.1.

Tested on a VM with VLEN=256, a CanMV K230 with VLEN=128 (with only
the big core enabled), a Lichee Pi with RVV 0.7.1 and a VF2 with no
vector.

A compiler with RVV 1.0 support must be used to build OpenBLAS for
riscv64 when DYNAMIC_ARCH=1.

Signed-off-by: Mark Ryan <markdryan@rivosinc.com>

1 year ago

..

Makefile

Add autodetection for riscv64

1 year ago

OpenBLAS is an optimized BLAS library based on GotoBLAS2 1.13 BSD version.

C Fortran Motorola 68K Assembly Makefile Unix Assembly other

martin@ruby.chemie.uni-freiburg.de traits.zhang@gmail.com wernsaar@googlemail.com xianyi@iscas.ac.cn hank.p.anderson@gmail.com 52632443+wjc404@users.noreply.github.com guxiwei-hf@loongson.cn wangyang.guo@intel.com ashwin.sekhar@cavium.com isuruf@gmail.com chip.kerchner@ibm.com rajis@linux.ibm.com chris.sidebottom@arm.com binebrank@gmail.com wangqian10@iscas.ac.cn arjan@linux.intel.com mhillen@linux.ibm.com m.tk1@hotmail.com 16061801+brada4@users.noreply.github.com ashwin@broadcom.com ralf.gommers@gmail.com bradatajs@yahoo.com xianyi@perfxlab.com jeromerobert@gmx.com zaheer.chothia@gmail.com

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