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[VTA] Speedup TSIM by Multi-threading #4491

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Dec 11, 2019
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[VTA] Speedup TSIM by Multi-threading #4491

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7 changes: 7 additions & 0 deletions vta/hardware/chisel/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,7 @@ TOP = VTA
TOP_TEST = Test
BUILD_NAME = build
USE_TRACE = 0
USE_THREADS = $(shell nproc)
VTA_LIBNAME = libvta_hw
UNITTEST_NAME = all
CXX = g++
Expand Down Expand Up @@ -92,6 +93,12 @@ else
cxx_flags += -DVM_TRACE=0
endif

ifneq ($(USE_THREADS), 0)
verilator_opt += -threads $(USE_THREADS)
cxx_flags += -DVL_THREADED
cxx_objs += $(verilator_build_dir)/verilated_threads.o
endif

VPATH = $(VERILATOR_INC_DIR):$(verilator_build_dir):$(vta_dir)/hardware/dpi

# The following is to be consistent with cmake
Expand Down