src/test/scripts/functions/lineage/LineageReuseGPU3.dml

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SimLM = function(Matrix[Double] X, Matrix[Double] y, Double lamda=0.0001) return (Matrix[Double] beta) 
{
  A = t(X) %*% X + diag(matrix(lamda, rows=ncol(X), cols=1));
  while(FALSE) {}
  b = t(X) %*% y;
  beta = cbind(A, b); #gpu
}

r = 100
c = 10

X = rand(rows=r, cols=c, seed=42);
y = rand(rows=r, cols=1, seed=43);
R = matrix(0, 1, 3);

beta1 = SimLM(X, y, 0.0001);
R[,1] = sum(beta1);

beta2 = SimLM(X, y, 0.0001);
R[,2] = sum(beta2); #second hit

beta3 = SimLM(X, y, 0.0001);
R[,3] = sum(beta3); #function reuse

write(R, $1, format="text");