Makefile options for NVIDIA Jetson Nano #350

[2022-02-02.22:15:38] [Info] Initializing NVIDIA Tegra X1
[2022-02-02.22:15:38] [Info] Generating 327,680 starting points (12.5MB)
[2022-02-02.22:15:39] [Info] 10.0%
[2022-02-02.22:15:40] [Info] 20.0%
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[2022-02-02.22:15:41] [Info] Done
[2022-02-02.22:15:41] [Info] Loading addresses from '/root/addresses'
[2022-02-02.22:15:41] [Info] 88 addresses loaded (0.0MB)
[2022-02-02.22:15:41] [Info] Allocating bloom filter (0.0MB)
NVIDIA Tegra X1  1318 / 3964MB | 88 targets 5.82 MKey/s (324,403,200 total) [00:00:53][2022-02-02.22:16:38] [Info] Checkpoint
NVIDIA Tegra X1  1319 / 3964MB | 88 targets 5.86 MKey/s (680,263,680 total) [00:01:53][2022-02-02.22:17:39] [Info] Checkpoint
NVIDIA Tegra X1  1319 / 3964MB | 88 targets 5.84 MKey/s (734,003,200 total) [00:02:02]

diff --git a/Makefile b/Makefile
index 6375830..e385f51 100644
--- a/Makefile
+++ b/Makefile
@@ -10,12 +10,12 @@ LIBS+=-L$(LIBDIR)

 # C++ options
 CXX=g++
-CXXFLAGS=-O2 -std=c++11
+CXXFLAGS=-O3 -std=c++11 -march=native

 # CUDA variables
-COMPUTE_CAP=30
+COMPUTE_CAP=53
 NVCC=nvcc
-NVCCFLAGS=-std=c++11 -gencode=arch=compute_${COMPUTE_CAP},code=\"sm_${COMPUTE_CAP}\" -Xptxas="-v" -Xcompiler "${CXXFLAGS}"
+NVCCFLAGS=-std=c++11 -gencode arch=compute_53,code=sm_53 -Xptxas="-v" -Xcompiler "${CXXFLAGS}"
 CUDA_HOME=/usr/local/cuda
 CUDA_LIB=${CUDA_HOME}/lib64
 CUDA_INCLUDE=${CUDA_HOME}/include