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| author | Georgios Pinitas <georgios.pinitas@arm.com> | 2021-01-22 05:47:37 +0000 |
|---|---|---|
| committer | Georgios Pinitas <georgios.pinitas@arm.com> | 2021-02-01 16:51:44 +0000 |
| commit | ea857273d8b4a94fb7f1e63ce9068a60259fb9d3 (patch) | |
| tree | e4d7a90f28d4ba4d218e77343c107afa137d7cec /SConstruct | |
| parent | 655e8c6334580a570008243af1896d269fdd60ad (diff) | |
| download | ComputeLibrary-ea857273d8b4a94fb7f1e63ce9068a60259fb9d3.tar.gz | |
Compress OpenCL kernel files using zlib for Android
Kernel files are embedded into the binary as the default option when
building which leads to binary size bloating.
Add `compress_kernels` option and utilize zlib for further compressing
the text kernel files and reduce the overall binary size. We use a
base64 encoding/decoding to ensure that the strings can be easily
embedded. This adds to the binary size but still the overall reduction
is significant.
Maximum compression level 9 is used.
Option is currently restricted to Android builds as android toolchain
provides a zlib library.
Initial experimentations indicate a binary size reduction of 50%
Resolves: COMPMID-4017
Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Change-Id: Iee81b8c00391b26a5f41642699692928a4d6bd6e
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4958
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Diffstat (limited to 'SConstruct')
| -rw-r--r-- | SConstruct | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/SConstruct b/SConstruct index 94cf80d12a..d5461afe42 100644 --- a/SConstruct +++ b/SConstruct @@ -56,6 +56,7 @@ vars.AddVariables( BoolVariable("neon", "Enable Neon support", False), BoolVariable("gles_compute", "Enable OpenGL ES Compute Shader support", False), BoolVariable("embed_kernels", "Embed OpenCL kernels and OpenGL ES compute shaders in library binary", True), + BoolVariable("compress_kernels", "Compress embedded OpenCL kernels in library binary. Note embed_kernels should be enabled", False), BoolVariable("set_soname", "Set the library's soname and shlibversion (requires SCons 2.4 or above)", False), BoolVariable("tracing", "Enable runtime tracing", False), BoolVariable("openmp", "Enable OpenMP backend", False), @@ -135,6 +136,10 @@ if env['os'] == 'bare_metal': print("ERROR: OpenMP and C++11 threads not supported in bare_metal. Use cppthreads=0 openmp=0") Exit(1) +if env['opencl'] and env['embed_kernels'] and env['compress_kernels'] and env['os'] not in ['android']: + print("Compressed kernels are supported only for android builds") + Exit(1) + if not env['exceptions']: if env['opencl'] or env['gles_compute']: print("ERROR: OpenCL and GLES are not supported when building without exceptions. Use opencl=0 gles_compute=0") @@ -349,6 +354,9 @@ if env["os"] not in ["android", "bare_metal"] and (env['opencl'] or env['cppthre if env['opencl'] or env['gles_compute']: if env['embed_kernels']: env.Append(CPPDEFINES = ['EMBEDDED_KERNELS']) + if env['compress_kernels']: + env.Append(CPPDEFINES = ['ARM_COMPUTE_COMPRESSED_KERNELS']) + env.Append(LIBS = ['z']) if env['debug']: env['asserts'] = True |