data access in kernels how to access data of one kernel in another kernel

Accelerated Computing CUDA CUDA Programming and Performance
#1

Hi,

How to make the data - which is transferred from host program to GPU (using cudaMemcpy function) memory- to be accessed in different cuda kernel calls at different intervals of program execution.

Is it possible?

Thanks

#2

You can make two calls.

kernel01<<<>>>(din,dout)
kernel01<<<>>>(dout,dmoret)

#3

Assuming - dout is an array of integers.

kernel01<<<>>>(din,dout) - In this cuda kernel definition, if some operation performed on dout array inside CUDA and values are modified, then in the next kernel call:

kernel02<<<>>>(dout, dmoret) - will it continue to take the modified values or will it take a original values.

Thanks

#4

Modified ones.