Error blackscholes for N=10^2

[davidbp]

Hello

I 'ved tried your black scholes script on a mac and I get the following results. It seems to work but an ERROR message is printed. Do you have the same behaviour?

INFO: Running benchmarks number of threads: 1
| Backend | Time (μs) for N = 10^1 |
| ---- | ---- |
| JLContext Intel(R) Xeon(R) CPU E5-1620 v2 @ 3.70GHz with 1 threads |   0.00 μs|
| CLContext: AMD Radeon HD - FirePro D300 Compute Engine |   0.00 μs|

| Backend | Time (μs) for N = 10^2 |
| ---- | ---- |
| JLContext Intel(R) Xeon(R) CPU E5-1620 v2 @ 3.70GHz with 1 threads |   0.00 μs|
| CLContext: AMD Radeon HD - FirePro D300 Compute Engine |   0.00 μs|
ERROR (unhandled task failure): MethodError: no method matching unsafe_string(::Ptr{Void})
Closest candidates are:
  unsafe_string(!Matched::Cstring) at c.jl:79
  unsafe_string(!Matched::Union{Ptr{Int8}, Ptr{UInt8}}) at strings/string.jl:39
  unsafe_string(!Matched::Union{Ptr{Int8}, Ptr{UInt8}}, !Matched::Integer) at strings/string.jl:35
Stacktrace:
 [1] macro expansion at /Users/macpro/.julia/v0.6/OpenCL/src/context.jl:95 [inlined]
 [2] (::OpenCL.cl.##43#44)() at ./task.jl:335

| Backend | Time (μs) for N = 10^3 |
| ---- | ---- |
| JLContext Intel(R) Xeon(R) CPU E5-1620 v2 @ 3.70GHz with 1 threads |   0.00 μs|
| CLContext: AMD Radeon HD - FirePro D300 Compute Engine |   0.00 μs|

| Backend | Time (μs) for N = 10^4 |
| ---- | ---- |
| JLContext Intel(R) Xeon(R) CPU E5-1620 v2 @ 3.70GHz with 1 threads |   0.00 μs|
| CLContext: AMD Radeon HD - FirePro D300 Compute Engine |   0.00 μs|

| Backend | Time (μs) for N = 10^5 |
| ---- | ---- |
| JLContext Intel(R) Xeon(R) CPU E5-1620 v2 @ 3.70GHz with 1 threads |   0.01 μs|
| CLContext: AMD Radeon HD - FirePro D300 Compute Engine |   0.00 μs|

| Backend | Time (μs) for N = 10^6 |
| ---- | ---- |
| JLContext Intel(R) Xeon(R) CPU E5-1620 v2 @ 3.70GHz with 1 threads |   0.09 μs|
| CLContext: AMD Radeon HD - FirePro D300 Compute Engine |   0.00 μs|

| Backend | Time (μs) for N = 10^7 |
| ---- | ---- |
| JLContext Intel(R) Xeon(R) CPU E5-1620 v2 @ 3.70GHz with 1 threads |   0.92 μs|
| CLContext: AMD Radeon HD - FirePro D300 Compute Engine |   0.04 μs|

[jpsamaroo]

This is a known OpenCL.jl issue: Issue 111. I get this error as well, but just ignore it since it usually doesn't cause the running script to fail. It occurs on at least Linux and OSX, and for pretty much every OpenCL script I run, so it's not isolated to GPUArrays.

[davidbp]

OK, than you for your answer.