How to transfer reducer_list_append to MIC?

Jun — Sun, 12 Apr 2015 08:50:22 GMT

Hi I am new to cilk plus and MIC. I had this topic in MIC forum as well

I have a problem where I need to offload/parallel process some data, append to a list B , and return to the host. The host will then combine this list to another host std::list<T> A.

I have following approach:

Create a cilk::reducer_list_append<T> B on host use cilk_shared , B is empty now.
Cilk Plus will automatically transfer B to MIC , MIC does some calculations and append data to B and return B back to host.
B.get_value() will return a std::list<T> C , use A.splice to combine list A and C.

I read this https://software.intel.com/en-us/forums/topic/360604 and it seems that in order to cilk share STL or other container like cilk::reducer_list_append, I need to specify the allocator of B to __offload::shared_allocator<>

So My concern is

1. do I need to construct my A using allocator __offload::shared_allocator<> as well ? Otherwise C will have different allocator with A right?

2. Is there a easy way to solve this problem ? I just need to transfer a list back and forth between host and MIC

Thanks in advance

topic How to transfer reducer_list_append to MIC? in Software Archive

How to transfer reducer_list_append to MIC?