Hi, I am sorry but I was wrong for the 1st question. When I run the simulator long enough it started printing out data blocks with real value. So I think the all-zero information is not the real simulation.
But I still have the 2nd question. When I set my system as 2-core CMP, MESI_CMP_directory protocol, two 3MB/bank L2 caches, the NetDest info is like [NetDest (4) 0 1 - 0 0 - 0 - 0 - ] When I set it as 4-core CMP, MESI_CMP_directory, two 3MB/bank L2 caches, the NetDest info is like [NetDest (4) 0 0 0 0 - 1 0 - 0 - 0 - ]. Could you please explain what each field in the NetDest info means? Thank you and sorry again for the trouble. Thanks, Yingying On Tue, Oct 16, 2012 at 2:54 PM, Cookie <cookie.yingy...@gmail.com> wrote: > Hi, > > I have a question about the data fetched from main memory. As in > MESI_CMP_directory-L2cache.sm, action "ee_sendDataToGetXRequestor' sends > the cache block (phyaddr and real data) to the requestor. It also prints > out the debug information as " DPRINTF(RubySlicc, "Address: %s, > Destination: %s, DataBlock: %s\n", out_msg.Address, out_msg.Destination, > out_msg.DataBlk);". I noticed that the out_msg.DataBlk is always 0x0, as > below: > ------------------------------------------------ > 33943500: system.l2_cntrl1: MESI_CMP_directory-L2cache.sm:557: Address: > [0x7255240, line 0x7255240], Destination: [NetDest (4) 0 1 - 0 0 - 0 - 0 > - ], DataBlock: [ 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 > 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 > 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 > 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 ] > ------------------------------------------------ > And of course the received data of L1cache is also 0. However, I don't > think the real data block can always be 0. Is there anything wrong about my > cache configuration or there is no real data contained in cache blocks? > > Another question is about the NetDest class. As shown in the debug > information, the destination information is like [NetDest (4) 0 1 - 0 0 > - 0 - 0 - ]. I wonder what this information means. I configured the > system as 2-core CMP with private L1I/L1D caches and 2 shared L2 caches > (3MB/bank). I think it means there are two L2 cache banks, located on each > CPU tile separately, but they are accessed as a whole unified L2 cache > indexing by physical addresses for both two cores. Is it correct? If it is > correct, could you please explain what the information [NetDest (4) 0 1 - > 0 0 - 0 - 0 - ] means under this configuration? Thank you for your help! > > > Best, > Yingying >
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