create buffer ok，but not write really

   I use clCreateBuffer（CL_MEM_READ_ONLY | CL_MEM_USE_HOST_PTR,） function  create 3 buffers， every buf has 300M, the driver version 10.18.10.3621，the Device global alloc mem size is 332185(KB) ,it is no error while runnig，but the result is not correct，the calculation using the first buf is correct ，the other two is wrong！I found that 
the other two bufs have no data to be written。 while I use 9.18.10.3071 ，the Device global alloc mem size is 415744 (KB) ，I crate 2 bufs， the result is correct，what's wrong？ 
who have  the version 9.18.10.3071 for win7 hd4000，Thank you！