Tidal-looper memory allocation failure


Trying to get tidal-looper working, but running into issues with buffer allocation. When I execute a line like once $ s "looper" (I'm using the default label), I get this error:

/b_alloc: memory allocation failed
/b_alloc: memory allocation failed
/b_alloc: memory allocation failed
/b_alloc: memory allocation failed
/b_alloc: memory allocation failed
/b_alloc: memory allocation failed
/b_alloc: memory allocation failed
/b_alloc: memory allocation failed

Here is my SC startup file:

s.reboot { // server options are only updated on reboot
	// configure the sound server: here you could add hardware specific options
	// see http://doc.sccode.org/Classes/ServerOptions.html
	s.options.numBuffers = 1024 * 256; // increase this if you need to load more samples
	s.options.memSize = 8192 * 32; // increase this if you get "alloc failed" messages
	s.options.numWireBufs = 2048; // increase this if you get "exceeded number of interconnect buffers" messages
	s.options.maxNodes = 1024 * 32; // increase this if you are getting drop outs and the message "too many nodes"
	s.options.numOutputBusChannels = 2; // set this to your hardware output channel size, if necessary
	s.options.numInputBusChannels = 2; // set this to your hardware output channel size, if necessary
	s.options.inDevice_("Aggregate Device"); // for tidal looping
	s.options.outDevice_("Screen Recording Audio"); // for screen recording
	// s.options.inDevice_("MacBook Pro Microphone");
	// s.options.outDevice_("MacBook Pro Speakers");
	// boot the server and start SuperDirt
	s.waitForBoot {
		~dirt.stop; // stop any old ones, avoid duplicate dirt (if it is nil, this won't do anything)
		~dirt = SuperDirt(2, s); // two output channels, increase if you want to pan across more channels
		// Initialize the TidalLooper
		~looper = TidalLooper(~dirt);

		// You can adjust these parameter even in runtime
		~looper.rLevel = 1.5; // recording level
		~looper.pLevel = 0.8; // prerecording level
		// ~looper.linput = 0; // Default 0; Set this to your main input port.
		// ~looper.lname = "loop"; // default "loop"

		// load mi-ugens.scd synthdefs
		load("Users/may/Library/Application Support/SuperCollider/synthdefs/mi-ugens.scd");

		// load custom synthdefs

		~dirt.loadSoundFiles; // load samples (path containing a wildcard can be passed in)
		// for example: ~dirt.loadSoundFiles("/Users/myUserName/Dirt/samples/*");

		// s.sync; // optionally: wait for samples to be read
		~dirt.start(57120, 0 ! 12); // start listening on port 57120, create two busses each sending audio to channel 0
		SuperDirt.default = ~dirt; // make this instance available in sclang (optional)

		// optional, needed for convenient access from sclang:
			~d1 = ~dirt.orbits[0]; ~d2 = ~dirt.orbits[1]; ~d3 = ~dirt.orbits[2];
			~d4 = ~dirt.orbits[3]; ~d5 = ~dirt.orbits[4]; ~d6 = ~dirt.orbits[5];
			~d7 = ~dirt.orbits[6]; ~d8 = ~dirt.orbits[7]; ~d9 = ~dirt.orbits[8];
			~d10 = ~dirt.orbits[9]; ~d11 = ~dirt.orbits[10]; ~d12 = ~dirt.orbits[11];

		// directly below here, in your own copy of this file, you could add further code that you want to call on startup
		// this makes sure the server and ~dirt are running
		// you can keep this separate and make it easier to switch between setups
		// by using "path/to/my/file.scd".load and if necessary commenting out different load statements
		// ...

		// define global effects for mutable instruments effects
		~dirt.orbits.do { |x|
			var clouds = GlobalDirtEffect(\global_mi_clouds, [\cloudspitch, \cloudspos, \cloudssize, \cloudsdens, \cloudstex, \cloudswet, \cloudsgain, \cloudsspread, \cloudsrvb, \cloudsfb, \cloudsfreeze, \cloudsmode, \cloudslofi]);
			var verb = GlobalDirtEffect(\global_mi_verb, [\verbwet, \verbtime, \verbdamp, \verbhp, \verbfreeze, \verbdiff, \verbgain]);
			x.globalEffects = x.globalEffects
		// end define global effects for mutable instruments effects


	s.latency = 0.3; // increase this if you get "late" messages


For more context, I'm using BlackHole (16ch) in order to loop tidal's output for fun feedback stuff, and also to record the results, so I have two aggregate audio setups in my Audio MIDI Setup: "Aggregate Device" (16in, 16out) for input and "Screen Recording Audio" (0ins, 2out) for output. In total, I load 3101 MB in samples at dirt startup.

I've tried switching to my internal microphone & speakers in lieu of the feedback/aggregate setup so see if it was blackhole or something, but I got the same error. I've also tried increasing memSize and numBuffers separately (by doubling), and got the same error. Looking into memSize in the SC docs it looks like the value should by in KB rather than MB, but increasing memSize to 8192 * 1000 results in startup failure with the error Exception in World_New: FAILURE IN SERVER: HashTable allocation failed: out of memory!. I also tried switching the ~looper.linput to another channel, to no avail.

I got this working on another machine a while back, so not sure what's wrong this time around. Any guidance is appreciated!

1 Like

hello! what happens when you try to run the looped sample anyway ? i have the same error messages but weirdly it doesn't prevent the looper from functioning for me