Hi @fps
We will cut a new release in a few days. #304

Could you try master out?

Pkg.checkout("MXNet")
Pkg.build("MXNet")

Hi, thanks for your quick reply! I must note that I'm a complete julia noob and just wanted to try MXNet to get into it :)

Since I don't know how to set CUDA_HOME on my system:

julia> Pkg.checkout("MXNet")
INFO: Checking out MXNet master...
INFO: Pulling MXNet latest master...
INFO: Installing MacroTools v0.4.0
INFO: Installing TakingBroadcastSeriously v0.1.1

julia> Pkg.build("MXNet")
INFO: Building MXNet
INFO: Found a CUDA installation.
============================================================[ ERROR: MXNet ]============================================================

LoadError: KeyError: key "CUDA_HOME" not found
while loading /home/fps/.julia/v0.6/MXNet/deps/build.jl, in expression starting on line 66

========================================================================================================================================

============================================================[ BUILD ERRORS ]============================================================

WARNING: MXNet had build errors.

 - packages with build errors remain installed in /home/fps/.julia/v0.6
 - build the package(s) and all dependencies with `Pkg.build("MXNet")`
 - build a single package by running its `deps/build.jl` script

========================================================================================================================================

I had to change:

fps@mango 01:16:01 ~/.../v0.6/MXNet (master)* $ git diff
diff --git a/deps/build.jl b/deps/build.jl
index 86d6a98..766e736 100644
--- a/deps/build.jl
+++ b/deps/build.jl
@@ -38,14 +38,16 @@ end
 HAS_CUDA = false
 HAS_CUDNN = false
 let cudalib = Libdl.find_library(["libcuda", "nvcuda.dll"], CUDAPATHS)
-  HAS_CUDA = !isempty(cudalib) && Libdl.dlopen_e(cudalib) != C_NULL
+  # HAS_CUDA = !isempty(cudalib) && Libdl.dlopen_e(cudalib) != C_NULL
+  HAS_CUDA = false
 end
 
 if !HAS_CUDA && is_windows()
   # TODO: this needs to be improved.
   try
     run(`nvcc --version`)
-    HAS_CUDA = true
+    # HAS_CUDA = true
+    HAS_CUDA = false
   end
 end

but still I get:

julia> Pkg.build("MXNet")
INFO: Building MXNet
INFO: Did not find a CUDA installation, using CPU-only version of MXNet.
INFO: Attempting to Create directory /home/fps/.julia/v0.6/MXNet/deps/src
INFO: Directory /home/fps/.julia/v0.6/MXNet/deps/src already created
INFO: Attempting to Create directory /home/fps/.julia/v0.6/MXNet/deps/usr/lib
INFO: Directory /home/fps/.julia/v0.6/MXNet/deps/usr/lib already created
INFO: Attempting to Create directory /home/fps/.julia/v0.6/MXNet/deps/src/mxnet
INFO: Directory /home/fps/.julia/v0.6/MXNet/deps/src/mxnet already created
INFO: Changing Directory to /home/fps/.julia/v0.6/MXNet/deps/src/mxnet
Cleared directory 'cub'
Submodule 'cub' (https://github.com/NVlabs/cub) unregistered for path 'cub'
Cleared directory 'dmlc-core'
Submodule 'dmlc-core' (https://github.com/dmlc/dmlc-core.git) unregistered for path 'dmlc-core'
Cleared directory 'mshadow'
Submodule 'mshadow' (https://github.com/dmlc/mshadow.git) unregistered for path 'mshadow'
Cleared directory 'nnvm'
Submodule 'nnvm' (https://github.com/dmlc/nnvm) unregistered for path 'nnvm'
Cleared directory 'ps-lite'
Submodule 'ps-lite' (https://github.com/dmlc/ps-lite) unregistered for path 'ps-lite'
INFO: Changing Directory to /home/fps/.julia/v0.6/MXNet/deps/src/mxnet
remote: Counting objects: 44, done.
remote: Compressing objects: 100% (17/17), done.
remote: Total 44 (delta 25), reused 27 (delta 21), pack-reused 6
Unpacking objects: 100% (44/44), done.
From https://github.com/dmlc/mxnet
   a9f11a0..35ceea7  master     -> origin/master
INFO: Changing Directory to /home/fps/.julia/v0.6/MXNet/deps/src/mxnet
HEAD is now at 8713d25... [R][DOC] update R installation guide (#6457)
INFO: Changing Directory to /home/fps/.julia/v0.6/MXNet/deps/src/mxnet
Submodule 'cub' (https://github.com/NVlabs/cub) registered for path 'cub'
Submodule 'dmlc-core' (https://github.com/dmlc/dmlc-core.git) registered for path 'dmlc-core'
Submodule 'mshadow' (https://github.com/dmlc/mshadow.git) registered for path 'mshadow'
Submodule 'nnvm' (https://github.com/dmlc/nnvm) registered for path 'nnvm'
Submodule 'ps-lite' (https://github.com/dmlc/ps-lite) registered for path 'ps-lite'
fatal: reference is not a tree: 89de7ab20167909bc2c4f8acd397671c47cf3c0d
Submodule path 'dmlc-core': checked out 'a6c5701219e635fea808d264aefc5b03c3aec314'
Submodule path 'mshadow': checked out 'c037b06ddd810d39322cd056650f8b1f4763dd9d'
Submodule path 'nnvm': checked out 'b279286304ac954098d94a2695bca599e832effb'
Submodule path 'nnvm/dmlc-core': checked out '3a51614d39b69fdb5de1efcf1016426626d267a6'
Submodule path 'nnvm/plugin/nnvm-fusion': checked out '86853a73e93fdbcdaec6fd3eda39e8f11d554c92'
Submodule path 'ps-lite': checked out 'acdb698fa3bb80929ef83bb37c705f025e119b82'
Unable to checkout '89de7ab20167909bc2c4f8acd397671c47cf3c0d' in submodule path 'cub'
============================================================[ ERROR: MXNet ]============================================================

LoadError: failed process: Process(`git submodule update --init --recursive`, ProcessExited(1)) [1]
while loading /home/fps/.julia/v0.6/MXNet/deps/build.jl, in expression starting on line 83

========================================================================================================================================

============================================================[ BUILD ERRORS ]============================================================

WARNING: MXNet had build errors.

 - packages with build errors remain installed in /home/fps/.julia/v0.6
 - build the package(s) and all dependencies with `Pkg.build("MXNet")`
 - build a single package by running its `deps/build.jl` script

========================================================================================================================================

It's totally possible I do something brandead :) In that case feel free to close this issue and ignore me - still learning...

Just FYI and I don't know if it just adds to the noise, but I also tried

fps@mango 01:16:02 ~/.../v0.6/MXNet (master)* $ julia deps/build.jl 
INFO: Did not find a CUDA installation, using CPU-only version of MXNet.
INFO: Attempting to Create directory /home/fps/.julia/v0.6/deps/src
INFO: Attempting to Create directory /home/fps/.julia/v0.6/deps/usr/lib
INFO: Attempting to Create directory /home/fps/.julia/v0.6/deps/src/mxnet
INFO: Changing Directory to /home/fps/.julia/v0.6/deps/src
Cloning into 'mxnet'...
remote: Counting objects: 50874, done.
remote: Compressing objects: 100% (21/21), done.
remote: Total 50874 (delta 9), reused 8 (delta 2), pack-reused 50851
Receiving objects: 100% (50874/50874), 27.65 MiB | 929.00 KiB/s, done.
Resolving deltas: 100% (32502/32502), done.
Checking connectivity... done.
INFO: Changing Directory to /home/fps/.julia/v0.6/deps/src/mxnet
Cleared directory 'cub'
Cleared directory 'dlpack'
Cleared directory 'dmlc-core'
Cleared directory 'mshadow'
Cleared directory 'nnvm'
Cleared directory 'ps-lite'
INFO: Changing Directory to /home/fps/.julia/v0.6/deps/src/mxnet
INFO: Changing Directory to /home/fps/.julia/v0.6/deps/src/mxnet
Already up-to-date.
INFO: Changing Directory to /home/fps/.julia/v0.6/deps/src/mxnet
Submodule 'cub' (https://github.com/dmlc/cub) registered for path 'cub'
Submodule 'dlpack' (https://github.com/dmlc/dlpack) registered for path 'dlpack'
Submodule 'dmlc-core' (https://github.com/dmlc/dmlc-core.git) registered for path 'dmlc-core'
Submodule 'mshadow' (https://github.com/dmlc/mshadow.git) registered for path 'mshadow'
Submodule 'nnvm' (https://github.com/dmlc/nnvm) registered for path 'nnvm'
Submodule 'ps-lite' (https://github.com/dmlc/ps-lite) registered for path 'ps-lite'
Cloning into 'cub'...
remote: Counting objects: 190, done.
remote: Total 190 (delta 0), reused 0 (delta 0), pack-reused 190
Receiving objects: 100% (190/190), 498.22 KiB | 517.00 KiB/s, done.
Resolving deltas: 100% (58/58), done.
Checking connectivity... done.
Submodule path 'cub': checked out '05eb57faa0a4cac37c2a86fdf4b4dc865a95a1a3'
Cloning into 'dlpack'...
remote: Counting objects: 124, done.
remote: Compressing objects: 100% (11/11), done.
remote: Total 124 (delta 5), reused 16 (delta 4), pack-reused 104
Receiving objects: 100% (124/124), 50.63 KiB | 0 bytes/s, done.
Resolving deltas: 100% (39/39), done.
Checking connectivity... done.
Submodule path 'dlpack': checked out 'a6e09b58dc00ee0065f5b7879800e646fbb01d1e'
Cloning into 'dmlc-core'...
remote: Counting objects: 4481, done.
remote: Compressing objects: 100% (4/4), done.
remote: Total 4481 (delta 0), reused 2 (delta 0), pack-reused 4476
Receiving objects: 100% (4481/4481), 1.02 MiB | 765.00 KiB/s, done.
Resolving deltas: 100% (2654/2654), done.
Checking connectivity... done.
Submodule path 'dmlc-core': checked out '595d02c0e87be8a0846700462b6f45f1b1031e39'
Cloning into 'mshadow'...
remote: Counting objects: 4500, done.
remote: Total 4500 (delta 0), reused 0 (delta 0), pack-reused 4500
Receiving objects: 100% (4500/4500), 1.42 MiB | 712.00 KiB/s, done.
Resolving deltas: 100% (3087/3087), done.
Checking connectivity... done.
Submodule path 'mshadow': checked out '2d7780c3f2eefe4453fa419862d1b2089bedb8d5'
Cloning into 'nnvm'...
remote: Counting objects: 2728, done.
remote: Compressing objects: 100% (59/59), done.
remote: Total 2728 (delta 24), reused 46 (delta 18), pack-reused 2651
Receiving objects: 100% (2728/2728), 945.55 KiB | 755.00 KiB/s, done.
Resolving deltas: 100% (1537/1537), done.
Checking connectivity... done.
Submodule path 'nnvm': checked out '8d79cfd0b42fbe9f6ad75886d495065d5500b9dd'
Submodule 'dmlc-core' (https://github.com/dmlc/dmlc-core) registered for path 'dmlc-core'
Submodule 'tvm' (https://github.com/dmlc/tvm) registered for path 'tvm'
Cloning into 'dmlc-core'...
remote: Counting objects: 4481, done.
remote: Compressing objects: 100% (4/4), done.
remote: Total 4481 (delta 0), reused 2 (delta 0), pack-reused 4476
Receiving objects: 100% (4481/4481), 1.02 MiB | 741.00 KiB/s, done.
Resolving deltas: 100% (2654/2654), done.
Checking connectivity... done.
Submodule path 'nnvm/dmlc-core': checked out '04f91953ace74aced3bb317990515304c5425849'
Cloning into 'tvm'...
remote: Counting objects: 9442, done.
remote: Compressing objects: 100% (66/66), done.
remote: Total 9442 (delta 24), reused 33 (delta 11), pack-reused 9364
Receiving objects: 100% (9442/9442), 2.60 MiB | 901.00 KiB/s, done.
Resolving deltas: 100% (6280/6280), done.
Checking connectivity... done.
Submodule path 'nnvm/tvm': checked out 'eb761f36302d24c740b77281ecdcdddb588edf36'
Submodule 'HalideIR' (https://github.com/dmlc/HalideIR) registered for path 'HalideIR'
Submodule 'dlpack' (https://github.com/dmlc/dlpack) registered for path 'dlpack'
Submodule 'dmlc-core' (https://github.com/dmlc/dmlc-core) registered for path 'dmlc-core'
Cloning into 'HalideIR'...
remote: Counting objects: 175, done.
remote: Total 175 (delta 0), reused 0 (delta 0), pack-reused 175
Receiving objects: 100% (175/175), 174.70 KiB | 0 bytes/s, done.
Resolving deltas: 100% (82/82), done.
Checking connectivity... done.
Submodule path 'nnvm/tvm/HalideIR': checked out 'cb3c025d5b91ab994b063a85bc935fc364d8f491'
Cloning into 'dlpack'...
remote: Counting objects: 124, done.
remote: Compressing objects: 100% (11/11), done.
remote: Total 124 (delta 5), reused 16 (delta 4), pack-reused 104
Receiving objects: 100% (124/124), 50.63 KiB | 0 bytes/s, done.
Resolving deltas: 100% (39/39), done.
Checking connectivity... done.
Submodule path 'nnvm/tvm/dlpack': checked out '9422e98f3f4dafc6bc3473cf8484543ad376aab6'
Cloning into 'dmlc-core'...
remote: Counting objects: 4481, done.
remote: Compressing objects: 100% (4/4), done.
remote: Total 4481 (delta 0), reused 2 (delta 0), pack-reused 4476
Receiving objects: 100% (4481/4481), 1.02 MiB | 749.00 KiB/s, done.
Resolving deltas: 100% (2654/2654), done.
Checking connectivity... done.
Submodule path 'nnvm/tvm/dmlc-core': checked out '04f91953ace74aced3bb317990515304c5425849'
Cloning into 'ps-lite'...
remote: Counting objects: 1910, done.
remote: Total 1910 (delta 0), reused 0 (delta 0), pack-reused 1910
Receiving objects: 100% (1910/1910), 581.93 KiB | 349.00 KiB/s, done.
Resolving deltas: 100% (1217/1217), done.
Checking connectivity... done.
Submodule path 'ps-lite': checked out 'bdd4c67e9e34dc0b8350ce306b0caa737eb31c83'
INFO: Changing Directory to /home/fps/.julia/v0.6/deps/src/mxnet
INFO: Changing Directory to /home/fps/.julia/v0.6/deps/src/mxnet
Makefile:218: WARNING: Significant performance increases can be achieved by installing and enabling gperftools or jemalloc development packages
rm -rf python/mxnet/*/*.so python/mxnet/*/*.cpp
rm -f build/tests/cpp/mxnet_unit_tests  build/tests/cpp/test_main.o  build/tests/cpp/misc/memory_test.o  build/tests/cpp/storage/storage_test.o  build/tests/cpp/operator/krprod_test.o  build/tests/cpp/operator/activation_perf.o  build/tests/cpp/operator/coreop_perf.o  build/tests/cpp/operator/fully_conn_perf.o  build/tests/cpp/operator/batchnorm_test.o  build/tests/cpp/operator/core_op_runner_test.o  build/tests/cpp/engine/threaded_engine_test.o
rm -f -r build lib bin *~ */*~ */*/*~ */*/*/*~ R-package/NAMESPACE R-package/man R-package/R/mxnet_generated.R \
	R-package/inst R-package/src/image_recordio.h R-package/src/*.o R-package/src/*.so mxnet_*.tar.gz
cd /home/fps/.julia/v0.6/deps/src/mxnet/dmlc-core; make clean; cd -
make[1]: Entering directory '/home/fps/.julia/v0.6/deps/src/mxnet/dmlc-core'
rm -f line_split.o indexed_recordio_split.o recordio_split.o input_split_base.o io.o filesys.o local_filesys.o data.o recordio.o config.o  libdmlc.a test/filesys_test test/dataiter_test test/iostream_test test/recordio_test test/split_read_test test/stream_read_test test/split_test test/libsvm_parser_test test/libfm_parser_test test/split_repeat_read_test test/strtonum_test test/logging_test test/parameter_test test/registry_test test/csv_parser_test test/unittest/dmlc_unittest test/unittest/unittest_main.o test/unittest/unittest_json.o test/unittest/unittest_threaditer.o test/unittest/unittest_optional.o test/unittest/unittest_any.o test/unittest/unittest_array_view.o test/unittest/unittest_param.o test/unittest/unittest_serializer.o test/unittest/unittest_logging.o test/unittest/unittest_config.o *~ src/*~ src/*/*~ include/dmlc/*~ test/*~
make[1]: Leaving directory '/home/fps/.julia/v0.6/deps/src/mxnet/dmlc-core'
/home/fps/.julia/v0.6/deps/src/mxnet
cd /home/fps/.julia/v0.6/deps/src/mxnet/ps-lite; make clean; cd -
make[1]: Entering directory '/home/fps/.julia/v0.6/deps/src/mxnet/ps-lite'
rm -rf build  tests/test_connection  tests/test_simple_app  tests/test_kv_app tests/*.d
find src -name "*.pb.[ch]*" -delete
make[1]: Leaving directory '/home/fps/.julia/v0.6/deps/src/mxnet/ps-lite'
/home/fps/.julia/v0.6/deps/src/mxnet
cd /home/fps/.julia/v0.6/deps/src/mxnet/nnvm; make clean; cd -
make[1]: Entering directory '/home/fps/.julia/v0.6/deps/src/mxnet/nnvm'
rm -f -rf build lib bin *~ */*~ */*/*~ */*/*/*~ */*.o */*/*.o */*/*/*.o cli_test
make[1]: Leaving directory '/home/fps/.julia/v0.6/deps/src/mxnet/nnvm'
/home/fps/.julia/v0.6/deps/src/mxnet
cd /home/fps/.julia/v0.6/deps/src/mxnet/amalgamation; make clean; cd -
make[1]: Entering directory '/home/fps/.julia/v0.6/deps/src/mxnet/amalgamation'
rm -f *.d *.o *.so *.a *.js *.js.mem mxnet_predict-all.cc nnvm.cc
make[1]: Leaving directory '/home/fps/.julia/v0.6/deps/src/mxnet/amalgamation'
/home/fps/.julia/v0.6/deps/src/mxnet
INFO: Changing Directory to /home/fps/.julia/v0.6/deps/src/mxnet
cp: cannot stat '../../cblas.h': No such file or directory
ERROR: LoadError: failed process: Process(`cp ../../cblas.h include/cblas.h`, ProcessExited(1)) [1]
Stacktrace:
 [1] pipeline_error(::Base.Process) at ./process.jl:682
 [2] run(::Cmd) at ./process.jl:651
 [3] run(::BinDeps.SynchronousStepCollection) at /home/fps/.julia/v0.6/BinDeps/src/BinDeps.jl:519 (repeats 2 times)
 [4] satisfy!(::BinDeps.LibraryDependency, ::Array{DataType,1}) at /home/fps/.julia/v0.6/BinDeps/src/dependencies.jl:874
 [5] satisfy!(::BinDeps.LibraryDependency) at /home/fps/.julia/v0.6/BinDeps/src/dependencies.jl:852
 [6] macro expansion at /home/fps/.julia/v0.6/BinDeps/src/dependencies.jl:907 [inlined]
 [7] macro expansion at /home/fps/.julia/v0.6/MXNet/deps/build.jl:235 [inlined]
 [8] anonymous at ./:?
 [9] include_from_node1(::String) at ./loading.jl:576
 [10] include(::String) at ./sysimg.jl:14
 [11] process_options(::Base.JLOptions) at ./client.jl:305
 [12] _start() at ./client.jl:371
while loading /home/fps/.julia/v0.6/MXNet/deps/build.jl, in expression starting on line 83
1 fps@mango 01:20:33 ~/.../v0.6/MXNet (master)* $ 

LoadError: KeyError: key "CUDA_HOME" not found

oh... this KeyError might be my fault

For setting the CUDA_HOME

julia> ENV["CUDA_HOME"] = "..."  # e.g: on Arch Linux, it's /opt/cuda
...
julia> Pkg.build("MXNet")

For second post:

cp: cannot stat '../../cblas.h': No such file or directory

well, is your cblas.h gone ? (https://github.com/dmlc/MXNet.jl/blob/master/deps/cblas.h)

hmm... turning this issue into a PR makes the post owner changed ?!

Anyways, I disabled the check for CUDA_HOME in deps/build.jl as seen in my second message in this issue-thread. The error I get seems to be unrelated:

[...]
fatal: reference is not a tree: 89de7ab20167909bc2c4f8acd397671c47cf3c0d
[...]
Unable to checkout '89de7ab20167909bc2c4f8acd397671c47cf3c0d' in submodule path 'cub'
[...]

Regarding the error from calling deps/build.jl manually: No, it's there:

fps@mango 05:46:13 ~/.../v0.6/MXNet (master) $ pwd
/home/fps/.julia/v0.6/MXNet
fps@mango 05:46:47 ~/.../v0.6/MXNet (master) $ ls deps/cblas.h 
deps/cblas.h

Possibly something about my installation is broken? I just got a tarball from julialang, extracted it, ls -l'ed it's juila binary and then tried to install MXNet..

I think I possibly just called build.jl from the wrong $PWD (./MXNet/). Building from MXNet/deps seems to progress some more..

Problem solved (on irc).

For record, restart Julia session, then issue:

julia> ENV["MXNET_COMMIT"] = "0.12.0"

julia> Pkg.build("MXNet")