Forum Post: RE: What will happen if I declare two global variables with the same name on different cores?

HR:

Sorry,I cannot tell that clearly .

But,if it is in L2,I am sure that there is nothing because every core can occupy L2 memory space

separately Then I am not sure if the variable is located in the MSMC shared memroy or DDR.

Because with regarding to MSMC or DDR,they are shared together by all 8 cores.

     Ok ,Let's back to the initial problem.This time in order to more clearly I take an array

for example below.

----------------------------------------

//core0  side 

CMD file:

DDR3   :  org = 0x8000 0000     len =  0x1000 0000

TEST_DATA   >  DDR3

#pragma DATA_SECTION(value_for_test,"TEST_DATA")

int value_for_test[100];

//core1 side

CMD file

DDR3  :  org = 0x8000 00000   len = 0x1000 0000

TEST_DATA   >   DDR3

#pragma DATA_SECTION(value_for_test,"TEST_DATA")

int value_for_test[100];

-----------------------------------------------------

Like above situation ,Array value_for_test in core0 is located in the location address start from

0x8000 0000 and the same is for core1.What will happen ?  Do the two value_for_test conflict ?

I am not sure.

       For more,take a example, If at some situation,I memset value_for_test simultaneously from core0 side

  and core1 side.For example: core0 memset  0xff,  core1  memset   0xee

//core0 

memset(value_for_test,0xff,sizeof(value_for_test));

//core1

memset(value_for_test,0xee,sizeof(value_for_test));

Then,what will happen?  Should  we  avoid that  situation ?  Because it is unpredictably either for core0

or for core1.Do you agree me?