Hello all,
I found that FluidMLPRegressor will crash the server if I try to .fit while it is making a prediction via .kr. And when I say “while” I’m pretty sure that is very literal–as in, in the middle of making feedforward calculations. If I turn off the trig that is triggering the prediction calculations it is fine.
It’s really not a problem to ask the user to manage this stuff, which is what my code does now, but it did take a little thinking and poking today to try to figure out why my server was crashing… so maybe documenting it would be good. Example code below.
Thanks!
T
(
s.waitForBoot{
Routine{
var xcols = 100;
var ycols = 3;
var npoints = 500;
var xdict = Dictionary.newFrom([
"cols",xcols,
"data",Dictionary.newFrom(Array.fill(npoints,{
arg i;
[i.asString,Array.fill(xcols,{rrand(0.0,1.0)})]
}).flatten)
]);
var ydict = Dictionary.newFrom([
"cols",ycols,
"data",Dictionary.newFrom(Array.fill(npoints,{
arg i;
[i.asString,Array.fill(ycols,{rrand(0.0,1.0)})]
}).flatten)
]);
~xds = FluidDataSet(s);
~yds = FluidDataSet(s);
s.sync;
~xds.load(xdict);
~yds.load(ydict);
s.sync;
~xds.print;
~yds.print;
~nn = FluidMLPRegressor(s,[50],FluidMLPRegressor.sigmoid,FluidMLPRegressor.identity);
s.sync;
~nn.fit(~xds,~yds,{
arg loss;
"loss: %".format(loss).postln;
~synth = {
arg trigRate = 1;
var xsig = LFDNoise1.kr(1.dup(xcols)).range(0,1);
var xbuf = LocalBuf(xcols);
var ybuf = LocalBuf(ycols);
var ysig;
xsig.do({
arg val, i;
BufWr.kr(val,xbuf,i,1);
});
~nn.kr(Impulse.kr(trigRate),xbuf,ybuf);
ysig = ycols.collect({
arg i;
BufRd.kr(1,ybuf,i,1,1);
});
ysig.poll;
}.play;
})
}.play;
}
)
// this is very likely to be fine
~nn.fit(~xds,~yds);
// then do this
~synth.set(\trigRate,100);
// try this a few times and it will crash one of the times
~nn.fit(~xds,~yds);
