FluidBufNMF crashing the server on Linux

[vitreo12]

Hello flucomers!

The basic example of FluidBufNMF is crashing my sc server:

// =============== decompose some sounds ===============

// let's decompose the drum loop that comes with the FluCoMa extension:
~drums = Buffer.read(s,FluidFilesPath("Nicol-LoopE-M.wav"));

// hear the original mono sound file to know what we're working with
~drums.play;

// an empty buffer for the decomposed components to be written into:
~resynth = Buffer(s);

// how many components we want FluidBufNMF to try to decompose the buffer into:
~n_components = 2;

// process it:
FluidBufNMF.processBlocking(s,~drums,resynth:~resynth,components:~n_components,resynthMode:1,action:{"done".postln;});

Here's the gdb backtrace:

#0  0x000055806be128c8 in ?? ()
#1  0x00007f7d0ff95d0f in fluid::client::impl::NonRealTime<fluid::client::NRTThreadingAdaptor<fluid::client::ClientWrapper<fluid::client::bufnmf::NMFClient> >, fluid::client::FluidSCWrapper<fluid::client::NRTThreadingAdaptor<fluid::client::ClientWrapper<fluid::client::bufnmf::NMFClient> > > >::NRTCommand::sendReply(char const*, bool) ()
   from /home/francesco/.local/share/SuperCollider/Extensions/FluidCorpusManipulation/Plugins/FluidBufNMF.so
#2  0x00007f7d0ffaaa60 in fluid::client::impl::NonRealTime<fluid::client::NRTThreadingAdaptor<fluid::client::ClientWrapper<fluid::client::bufnmf::NMFClient> >, fluid::client::FluidSCWrapper<fluid::client::NRTThreadingAdaptor<fluid::client::ClientWrapper<fluid::client::bufnmf::NMFClient> > > >::CommandNew::stage2(World*) ()
   from /home/francesco/.local/share/SuperCollider/Extensions/FluidCorpusManipulation/Plugins/FluidBufNMF.so
#3  0x00007f7d0ffb696c in fluid::client::impl::NonRealTime<fluid::client::NRTThreadingAdaptor<fluid::client::ClientWrapper<fluid::client::bufnmf::NMFClient> >, fluid::client::FluidSCWrapper<fluid::client::NRTThreadingAdaptor<fluid::client::ClientWrapper<fluid::client::bufnmf::NMFClient> > > >::runAsyncCommand<fluid::client::impl::NonRealTime<fluid::client::NRTThreadingAdaptor<fluid::client::ClientWrapper<fluid::client::bufnmf::NMFClient> >, fluid::client::FluidSCWrapper<fluid::client::NRTThreadingAdaptor<fluid::client::ClientWrapper<fluid::client::bufnmf::NMFClient> > > >::CommandProcessNew>(World*, fluid::client::impl::NonRealTime<fluid::client::NRTThreadingAdaptor<fluid::client::ClientWrapper<fluid::client::bufnmf::NMFClient> >, fluid::client::FluidSCWrapper<fluid::client::NRTThreadingAdaptor<fluid::client::ClientWrapper<fluid::client::bufnmf::NMFClient> > > >::CommandProcessNew*, void*, unsigned long, char*)::{lambda(World*, void*)#1}::_FUN(World*, void*) () from /home/francesco/.local/share/SuperCollider/Extensions/FluidCorpusManipulation/Plugins/FluidBufNMF.so
#4  0x00007f7d18144faf in ?? () from /usr/lib/libscsynth.so.1
#5  0x00007f7d1812d79a in ?? () from /usr/lib/libscsynth.so.1
#6  0x00007f7d17ed62f3 in std::execute_native_thread_routine (__p=0x55806b78c080)
    at /usr/src/debug/gcc/libstdc++-v3/src/c++11/thread.cc:82
#7  0x00007f7d17c9f8fd in ?? () from /usr/lib/libc.so.6
#8  0x00007f7d17d21a60 in ?? () from /usr/lib/libc.so.6

Couldn't test this on other distros, I'm currently on Arch 6.0.12

[vitreo12]

I have rebuilt SC from scratch basing it on develop, and it now works. The version I had the problem with was 3.12.2.

[dyfer]

My guess is that this is related to the fact that currently FluCoMa needs to be built against the same version of boost as SC. This was mentioned in a few Issues/PR discussions but I don't think it's explicitly documented. See #149 for related discussion.

[markhanslip]

Hey, I'm having a similar issue with FluidBufNMF. I'm running the most recent stable FluCoMa build with SuperCollider 3.10.0 in Ubuntu 20.04.

I was just trying to get this example working:

~drums = Buffer.read(s,FluidFilesPath("Nicol-LoopE-M.wav"));
~resynth = Buffer(s);
~n_components = 3;
FluidBufNMF.processBlocking(s,~drums,resynth:~resynth,components:~n_components,resynthMode:1,action:{"done".postln;});
(
fork{
	~n_components.do{
		arg i;
		"decomposed part #%".format(i+1).postln;
		{
			PlayBuf.ar(~n_components,~resynth,BufRateScale.ir(~resynth),doneAction:2)[i].dup;
		}.play;
		(~drums.duration + 1).wait;
	}
};
)

The NMF process seems to complete but trying to play the populated ~resynth buffer back throws this gem:

FAILURE IN SERVER: Command not found Command not found

Any help appreciated - I will try and test it on another Linux device in the meantime. Cheers.