From 3724fb15faafaaca54cc7a500df9c1490a387049 Mon Sep 17 00:00:00 2001 From: jkalamat Date: Thu, 9 Jun 2016 11:24:55 -0400 Subject: gpu-compute: parametrize Wavefront size Eliminate the VSZ constant that defined the Wavefront size (in numbers of work items); replaced it with a parameter in the GPU.py configuration script. Changed all data structures dependent on the Wavefront size to be dynamically sized. Legal values of Wavefront size are 16, 32, 64 for now and checked at initialization time. --- src/gpu-compute/vector_register_state.cc | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'src/gpu-compute/vector_register_state.cc') diff --git a/src/gpu-compute/vector_register_state.cc b/src/gpu-compute/vector_register_state.cc index f231b0579..e177d3b64 100644 --- a/src/gpu-compute/vector_register_state.cc +++ b/src/gpu-compute/vector_register_state.cc @@ -35,6 +35,8 @@ #include "gpu-compute/vector_register_state.hh" +#include + #include "gpu-compute/compute_unit.hh" VecRegisterState::VecRegisterState() : computeUnit(nullptr) @@ -51,8 +53,19 @@ VecRegisterState::setParent(ComputeUnit *_computeUnit) } void -VecRegisterState::init(uint32_t _size) +VecRegisterState::init(uint32_t _size, uint32_t wf_size) { s_reg.resize(_size); + fatal_if(wf_size > std::numeric_limits::digits || + wf_size <= 0, + "WF size is larger than the host can support or is zero"); + fatal_if((wf_size & (wf_size - 1)) != 0, + "Wavefront size should be a power of 2"); + for (int i = 0; i < s_reg.size(); ++i) { + s_reg[i].resize(wf_size, 0); + } d_reg.resize(_size); + for (int i = 0; i < d_reg.size(); ++i) { + d_reg[i].resize(wf_size, 0); + } } -- cgit v1.2.3