AttributeError: 'float' object has no attribute '__name__'

[mohdsm81]

Hi,

Can you please point me to how to fix it or at least where to begin and what reasons causing this? (thanks a lot in advance and all the best)

I was trying to run my blackscholes.py that i implemented from scratch different from original implementation. I use an array of numpy.float64 tuple values to compute results. However when I run it, copperhead gives me the following trace although python interpreter works perfectly:

Trying to read file (" inputs/in_4.txt ") content into a list ...

Now moving data into heterogeneous memory spaces using copperhead.cuarray ...

Stock prices computed:

Now computing CPU prices ...
CPU: [9.0956624056554016, 5.1448393856839623, 4.8148864021584643, 9.6919439520870583]
Time (sec): 0.000427961349487
Now computing CPU-OpenMP prices ...

ERROR during compilation in gather_source
def computeAll(optionDataCuarray):
return map(BlkSchlsEqEuroNoDiv, optionDataCuarray)

ERROR during compilation in frontend
def computeAll(optionDataCuarray):
return map(BlkSchlsEqEuroNoDiv, optionDataCuarray)
Traceback (most recent call last):
File "blackscholes.py", line 285, in
main()
File "blackscholes.py", line 266, in main
cpu_omp = computeAll(optionDataCuarray)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/runtime/cufunction.py", line 58, in call
return P.execute(self, args, kwargs)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/runtime/driver.py", line 57, in execute
return execute(self.tag(), cufn, _args, *_kwargs)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/runtime/driver.py", line 131, in execute
**k)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/passes.py", line 292, in compile
return run_compilation(target, source, M)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/passes.py", line 270, in run_compilation
return target(suite, M)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/passes.py", line 91, in call
ast = P(ast, M)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/passes.py", line 91, in call
ast = P(ast, M)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/passes.py", line 130, in gather_source
return Front.gather_source(ast, M)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/rewrites.py", line 104, in gather_source
gathered = gatherer.gather(stmt)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/rewrites.py", line 62, in gather
self.clean.insert(0, self.rewrite(stmt))
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/coresyntax.py", line 394, in rewrite
return [self.rewrite(y) for y in x]
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/coresyntax.py", line 399, in rewrite
rewritten = fn(x_copy)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/rewrites.py", line 71, in _Procedure
self.rewrite_children(proc)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/coresyntax.py", line 384, in rewrite_children
x.parameters = self.rewrite(x.parameters)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/coresyntax.py", line 394, in rewrite
return [self.rewrite(y) for y in x]
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/coresyntax.py", line 399, in rewrite
rewritten = fn(x_copy)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/rewrites.py", line 82, in _Bind
self.rewrite_children(bind)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/coresyntax.py", line 384, in rewrite_children
x.parameters = self.rewrite(x.parameters)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/coresyntax.py", line 394, in rewrite
return [self.rewrite(y) for y in x]
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/coresyntax.py", line 399, in rewrite
rewritten = fn(x_copy)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/coresyntax.py", line 406, in _default
return self.rewrite_children(x)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/coresyntax.py", line 384, in rewrite_children
x.parameters = self.rewrite(x.parameters)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/coresyntax.py", line 394, in rewrite
return [self.rewrite(y) for y in x]
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/coresyntax.py", line 399, in rewrite
rewritten = fn(x_copy)
File "/usr/local/lib/python2.7/dist-packages/copperhead-0.2a2-py2.7.egg/copperhead/compiler/rewrites.py", line 89, in _Name
if (fn.name in self.prelude_impl):
AttributeError: 'float' object has no attribute 'name'

[dybber]

I also get this error quite often and it seems that several things can cause this error to appear.

• Using a function that does not have a Copperhead equivalent (e.g. using pow(a,b))
• Using a globally defined variable inside a Copperhead expression