Andrej Karpathy
38 lines
1.3 KiB
Makefile
38 lines
1.3 KiB
Makefile
# choose your compiler, e.g. gcc/clang
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# example override to clang: make run CC=clang
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CC = gcc
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# the most basic way of building that is most likely to work on most systems
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.PHONY: run
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run: run.c
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$(CC) -O3 -o run run.c -lm
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# useful for a debug build, can then e.g. analyze with valgrind, example:
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# $ valgrind --leak-check=full ./run out/model.bin 1.0 3
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rundebug: run.c
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$(CC) -g -o run run.c -lm
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# https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html
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# https://simonbyrne.github.io/notes/fastmath/
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# -Ofast enables all -O3 optimizations.
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# Disregards strict standards compliance.
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# It also enables optimizations that are not valid for all standard-compliant programs.
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# It turns on -ffast-math, -fallow-store-data-races and the Fortran-specific
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# -fstack-arrays, unless -fmax-stack-var-size is specified, and -fno-protect-parens.
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# It turns off -fsemantic-interposition.
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# In our specific application this is *probably* okay to use
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.PHONY: runfast
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runfast: run.c
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$(CC) -Ofast -o run run.c -lm
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# additionally compiles with OpenMP, allowing multithreaded runs
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# make sure to also enable multiple threads when running, e.g.:
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# OMP_NUM_THREADS=4 ./run out/model.bin
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.PHONY: runomp
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runomp: run.c
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$(CC) -Ofast -fopenmp -march=native run.c -lm -o run
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.PHONY: clean
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clean:
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rm -f run
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