wasm package size #15944

yiwenxue · 2023-08-14T04:50:33Z

yiwenxue
Aug 14, 2023

Meshoptimizer decoder wasm package

filesize	emscripten (with stl)	emscripten	emscripten (-s)	wasi
decoder.wasm.js	102 KB	95.8 KB	95.8 KB	0 KB + (6 KB helper)
decoder.wasm	320 KB	243 KB	20.0 KB	5 KB
decoder.asm.js	369 KB	243 KB	244 KB	47 KB
sum	791 KB	581.8 KB	359 KB	58 KB

emscripten (-s):

D:/meshlet/emsdk/upstream/emscripten/em++.bat  @CMakeFiles/decoder.dir/includes_CXX.rsp -g -O3 -DNDEBUG -nostartfiles -nostdlib -Wl,--no-entry -fno-slp-vectorize -fno-vectorize -fno-unroll-loops -MD -MT CMakeFiles/decoder.dir/external/meshoptimizer/src/vertexcodec.cpp.o -MF CMakeFiles/decoder.dir/external/meshoptimizer/src/vertexcodec.cpp.o.d -o CMakeFiles/decoder.dir/external/meshoptimizer/src/vertexcodec.cpp.o -c D:/meshlet/meshopt/external/meshoptimizer/src/vertexcodec.cpp

D:/meshlet/emsdk/upstream/emscripten/em++.bat  @CMakeFiles/decoder.dir/includes_CXX.rsp -g -O3 -DNDEBUG -nostartfiles -nostdlib -Wl,--no-entry -fno-slp-vectorize -fno-vectorize -fno-unroll-loops -MD -MT CMakeFiles/decoder.dir/external/meshoptimizer/src/vertexcodec.cpp.o -MF CMakeFiles/decoder.dir/external/meshoptimizer/src/vertexcodec.cpp.o.d -o CMakeFiles/decoder.dir/external/meshoptimizer/src/vertexcodec.cpp.o -c D:/meshlet/meshopt/external/meshoptimizer/src/vertexcodec.cpp

D:/meshlet/emsdk/upstream/emscripten/em++.bat -g --bind --allow-undefined -Wl,-s -Wl,--no-entry -s TOTAL_MEMORY=128MB --stack-size=32768 -s NO_EXIT_RUNTIME=1 -s ASSERTIONS=2 -s WASM=1 -s MODULARIZE=1 -s ALLOW_MEMORY_GROWTH=1 -s EXPORTED_FUNCTIONS="['_malloc','_free','_meshopt_decodeIndexBuffer','_meshopt_decodeVertexBuffer']" -s EXPORTED_RUNTIME_METHODS="['ccall', 'cwrap']" @CMakeFiles/decoder.dir/objects1.rsp -o decoder.wasm.js

wasi sdk:

/d/workspace/bullet-compile/extenal/wasi-sdk-20.0/bin/clang++ src/vertexcodec.cpp src/indexcodec.cpp src/vertexfilter.cpp tools/wasmstubs.cpp --target=wasm32-wasi --sysroot=/d/workspace/bullet-compile/extenal/wasi-sdk-20.0/share/wasi-sysroot -O3 -DNDEBUG -nostartfiles -nostdlib -Wl,--no-entry -Wl,-s -fno-slp-vectorize -fno-vectorize -fno-unroll-loops -Wl,-z -Wl,stack-size=24576 -Wl,--initial-memory=65536 -Wl,--export=meshopt_decodeVertexBuffer -Wl,--export=meshopt_decodeIndexBuffer -Wl,--export=sbrk -Wl,--export=__wasm_call_ctors -o build/decoder_base.wasm

yiwenxue · 2023-08-14T06:01:18Z

yiwenxue
Aug 14, 2023
Author

emscripten cmake project:

  set (DECODER_WASM_SOURCES
  ${MESHOPT_DIR}/src/indexcodec.cpp
  ${MESHOPT_DIR}                                                                           
  /src/vertexcodec.cpp
    ${MESHOPT_DIR}/tools/wasmstubs.cpp
  )

  set (DECODER_WASM_EXPORTS
    # allocator
    _malloc
    _free

    # decoder
    _meshopt_decodeIndexBuffer
    _meshopt_decodeVertexBuffer
  )

  # add prefix to exports
  foreach (WASM_EXPORT ${DECODER_WASM_EXPORTS})
    set (WASM_EXPORT "'${WASM_EXPORT}'")
    list (APPEND DECODE_EXPORTS ${WASM_EXPORT})
  endforeach ()

  string (REPLACE ";" "," DECODE_EXPORTS "${DECODE_EXPORTS}")

  set (CXX_OPTIONS "-O3 -DNDEBUG -nostartfiles -nostdlib -fno-vectorize -fno-unroll-loops ")
  set (LINK_OPTIONS  "--bind --allow-undefined -Wl,-s -Wl,--no-entry -s TOTAL_MEMORY=128MB --stack-size=32768 -s NO_EXIT_RUNTIME=1 -s ASSERTIONS=2 -s WASM=0 -s ALLOW_MEMORY_GROWTH=1 -s EXPORTED_FUNCTIONS=\"[${DECODE_EXPORTS}]\" -s EXPORTED_RUNTIME_METHODS=\"['ccall', 'cwrap']\"")

  add_executable(decoder ${DECODER_WASM_SOURCES})

  target_include_directories(decoder
    PRIVATE
      ${CMAKE_SOURCE_DIR}/src
      ${MESHOPT_DIR}/src
    )

  set_target_properties(decoder PROPERTIES COMPILE_FLAGS ${CXX_OPTIONS})
  set_target_properties(decoder PROPERTIES LINK_FLAGS ${LINK_OPTIONS})
  set_target_properties(decoder PROPERTIES OUTPUT_NAME "decoder.wasm")

0 replies

yiwenxue · 2023-08-14T06:50:24Z

yiwenxue
Aug 14, 2023
Author

compare.zip

emscripten:
- decoder.wasm.js
- decoder.wasm
- decoder.asm.js
wasi:
- meshopt_decoder.wasm.js (decoder.wasm.js + decoder.wasm + decoder.wasm(simd version))
- meshopt_decoder.asm.js (generated by wasm2js)

0 replies

dumganhar · 2023-08-14T08:14:03Z

dumganhar
Aug 14, 2023

LINK_OPTIONS also needs to add -O3 flag

0 replies

yiwenxue · 2023-08-14T08:59:51Z

yiwenxue
Aug 14, 2023
Author

filesize	ems1	ems2	ems3	ems4	wasi
decoder.wasm.js	102 KB	95.8 KB	95.8 KB	48.9 KB	0 KB + (6 KB helper)
decoder.wasm	320 KB	243 KB	20.0 KB	18.0 KB	5 KB
decoder.asm.js	369 KB	243 KB	244 KB	84.4 KB	47 KB
sum	791 KB	581.8 KB	359 KB	151.3 KB	58 KB

ems1:

compile_flags: "-O3 -DNDEBUG"

link_flags: "-g --bind --allow-undefined -Wl,--no-entry -s TOTAL_MEMORY=128MB --stack-size=32768 -s NO_EXIT_RUNTIME=1 -s ASSERTIONS=2 -s WASM=0 -s ALLOW_MEMORY_GROWTH=1 -s EXPORTED_FUNCTIONS="[${DECODE_EXPORTS}]" -s EXPORTED_RUNTIME_METHODS="['ccall', 'cwrap']""

ems2:

compile_flags: "-O3 -DNDEBUG -nostartfiles -nostdlib -fno-vectorize -fno-unroll-loops"

link_flags: "-g --bind --allow-undefined -Wl,--no-entry -s TOTAL_MEMORY=128MB --stack-size=32768 -s NO_EXIT_RUNTIME=1 -s ASSERTIONS=2 -s WASM=0 -s ALLOW_MEMORY_GROWTH=1 -s EXPORTED_FUNCTIONS="[${DECODE_EXPORTS}]" -s EXPORTED_RUNTIME_METHODS="['ccall', 'cwrap']""

ems3:

compile_flags: "-O3 -DNDEBUG -nostartfiles -nostdlib -fno-vectorize -fno-unroll-loops"

link_flags: "-g --bind --allow-undefined -Wl,-s -Wl,--no-entry -s TOTAL_MEMORY=128MB --stack-size=32768 -s NO_EXIT_RUNTIME=1 -s ASSERTIONS=2 -s WASM=0 -s ALLOW_MEMORY_GROWTH=1 -s EXPORTED_FUNCTIONS="[${DECODE_EXPORTS}]" -s EXPORTED_RUNTIME_METHODS="['ccall', 'cwrap']""

ems4 (release):

compile_flags: "-O3 -DNDEBUG -nostartfiles -nostdlib -fno-vectorize -fno-unroll-loops -fno-exceptions -fno-rtti"

link_flags: "-g -O3 --bind --allow-undefined -Wl,-s -Wl,--no-entry -s TOTAL_MEMORY=128MB --stack-size=32768 -s NO_EXIT_RUNTIME=1 -s ASSERTIONS=2 -s WASM=1 -s MODULARIZE=1 -s ALLOW_MEMORY_GROWTH=1 -s EXPORTED_FUNCTIONS="[${DECODE_EXPORTS}]" -s EXPORTED_RUNTIME_METHODS="['ccall', 'cwrap']"

compress2.zip

emscripten:
- decoder.wasm.js
- decoder.wasm
- decoder.asm.js
- decoder.asm.js.mem
wasi:
- meshopt_decoder.wasm.js (decoder.wasm.js + decoder.wasm + decoder.wasm(simd version))
- meshopt_decoder.asm.js (generated by wasm2js)

0 replies

yiwenxue · 2023-08-14T09:29:39Z

yiwenxue
Aug 14, 2023
Author

filesize	ems1	ems2	ems3	ems4	ems5	wasi
decoder.wasm.js	102 KB	95.8 KB	95.8 KB	48.9 KB	30.5 KB	0 KB + (6 KB helper)
decoder.wasm	320 KB	243 KB	20.0 KB	18.0 KB	13.2 KB	5 KB
decoder.asm.js	369 KB	243 KB	244 KB	84.4 KB	58.2 KB	47 KB
sum	791 KB	581.8 KB	359 KB	151.3 KB	102 KB	58 KB

Flags

ems1:

compile_flags: "-O3 -DNDEBUG"

link_flags: "-g --bind --allow-undefined -Wl,--no-entry -s TOTAL_MEMORY=128MB --stack-size=32768 -s NO_EXIT_RUNTIME=1 -s ASSERTIONS=2 -s WASM=0 -s ALLOW_MEMORY_GROWTH=1 -s EXPORTED_FUNCTIONS="[${DECODE_EXPORTS}]" -s EXPORTED_RUNTIME_METHODS="['ccall', 'cwrap']""

ems2:

compile_flags: "-O3 -DNDEBUG -nostartfiles -nostdlib -fno-vectorize -fno-unroll-loops"

link_flags: "-g --bind --allow-undefined -Wl,--no-entry -s TOTAL_MEMORY=128MB --stack-size=32768 -s NO_EXIT_RUNTIME=1 -s ASSERTIONS=2 -s WASM=0 -s ALLOW_MEMORY_GROWTH=1 -s EXPORTED_FUNCTIONS="[${DECODE_EXPORTS}]" -s EXPORTED_RUNTIME_METHODS="['ccall', 'cwrap']""

ems3:

compile_flags: "-O3 -DNDEBUG -nostartfiles -nostdlib -fno-vectorize -fno-unroll-loops"

link_flags: "-g --bind --allow-undefined -Wl,-s -Wl,--no-entry -s TOTAL_MEMORY=128MB --stack-size=32768 -s NO_EXIT_RUNTIME=1 -s ASSERTIONS=2 -s WASM=0 -s ALLOW_MEMORY_GROWTH=1 -s EXPORTED_FUNCTIONS="[${DECODE_EXPORTS}]" -s EXPORTED_RUNTIME_METHODS="['ccall', 'cwrap']""

ems4 (release):

compile_flags: "-O3 -DNDEBUG -nostartfiles -nostdlib -fno-vectorize -fno-unroll-loops -fno-exceptions -fno-rtti"

link_flags: "-g -O3 --bind --allow-undefined -Wl,-s -Wl,--no-entry -s TOTAL_MEMORY=128MB --stack-size=32768 -s NO_EXIT_RUNTIME=1 -s ASSERTIONS=2 -s WASM=1 -s MODULARIZE=1 -s ALLOW_MEMORY_GROWTH=1 -s EXPORTED_FUNCTIONS="[${DECODE_EXPORTS}]" -s EXPORTED_RUNTIME_METHODS="['ccall', 'cwrap']"

ems5 (release):

compile_flags: "-O3 -DNDEBUG -nostartfiles -nostdlib -fno-vectorize -fno-unroll-loops -fno-exceptions -fno-rtti"

link_flags: "-O3 ~~--bind --allow-undefined~~ -s FILESYSTEM=0 -s ERROR_ON_UNDEFINED_SYMBOLS=0 -s DYNAMIC_EXECUTION=0 -Wl,-s -Wl,--no-entry -s TOTAL_MEMORY=128MB --stack-size=32768 -s NO_EXIT_RUNTIME=1 -s ASSERTIONS=2 -s WASM=1 -s MODULARIZE=1 -s ALLOW_MEMORY_GROWTH=1 -s EXPORTED_FUNCTIONS="[${DECODE_EXPORTS}]" -s EXPORTED_RUNTIME_METHODS="['ccall', 'cwrap']"

summary

release (no -g)
strip symbols, strip wasm.js
wasm.js -= 45KB
asm.js -= 162 KB
-nostartfiles -nostdlib
total -= 210 KB
-fno-exceptions -fno-rtti
wasm -= 3KB
linker -O3 -Wl,-s (strip all symbol)
strip symbols even with -g
wasm -= 223 KB
-s FILESYSTEM=0 -s ERROR_ON_UNDEFINED_SYMBOLS=0 -s DYNAMIC_EXECUTION=0
wasm.js -= 1 KB
--bind --allow-undefined
wasm.js -= 19 KB
wasm -= 5 KB
asm.js -= 26 KB

0 replies

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wasm package size #15944

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yiwenxue Aug 14, 2023

Meshoptimizer decoder wasm package

Replies: 5 comments

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yiwenxue Aug 14, 2023 Author

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yiwenxue Aug 14, 2023 Author

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dumganhar Aug 14, 2023

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Flags

ems1:

ems2:

ems3:

ems4 (release):

ems5 (release):

summary

yiwenxue
Aug 14, 2023

yiwenxue
Aug 14, 2023
Author

yiwenxue
Aug 14, 2023
Author

dumganhar
Aug 14, 2023

yiwenxue
Aug 14, 2023
Author

yiwenxue
Aug 14, 2023
Author