Add constant_cycles_kernel benchmark + header split and Makefile

Benchmark supports:
=> Looping on the GPU for a specified number of iterations
=> Looping infinitely on the GPU
=> Logging the sum time (ns and ms) for all iterations to complete

Also splits `testbench.h` out of `copy_testbench.h` for use in other
benchmarks.

1 files changed, 6 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index e81353d..7eaf03d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,9 @@
-.PHONY: copy_experiments
+.PHONY: all copy_experiments
+
+all: constant_cycles_kernel copy_experiments
+
+constant_cycles_kernel: constant_cycles_kernel.cu testbench.h
+        nvcc constant_cycles_kernel.cu -o constant_cycles_kernel
 
 copy_experiments:
         $(MAKE) -C $@