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Fix CG alpha,beta being ndarrays #7

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Fix CG alpha,beta being ndarrays #7

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8 changes: 4 additions & 4 deletions pyqmri/solver.py
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Original file line number Diff line number Diff line change
Expand Up @@ -165,8 +165,8 @@ def run(self, data, iters=30, lambd=1e-5, tol=1e-8, guess=None,
for i in range(iters):
self._operator_lhs(Ax, p)
Ax = Ax + lambd*p
alpha = (clarray.vdot(res, res) /
(clarray.vdot(p, Ax))).real.get()
alpha = float((clarray.vdot(res, res) /
(clarray.vdot(p, Ax))).real.get())
x = (x + alpha*p)
res_new = res - alpha*Ax
delta = np.linalg.norm(res_new.get())**2 /\
Expand All @@ -177,8 +177,8 @@ def run(self, data, iters=30, lambd=1e-5, tol=1e-8, guess=None,
del Ax, \
b, res, p, data, res_new
return np.squeeze(x.get())
beta = (clarray.vdot(res_new, res_new) /
clarray.vdot(res, res)).real.get()
beta = float((clarray.vdot(res_new, res_new) /
clarray.vdot(res, res)).real.get())
p = res_new + beta * p
(res, res_new) = (res_new, res)
del Ax, b, res, p, data, res_new
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