Re: [Gems-users] route from L1 to Directory

[Greg Byrd <gbyrd@xxxxxxxx>]

You have caches attached to one switch, and directories to another.  And there 
is no connection between the switches.  Your network is not fully connected. 
You need to create a link to get from switch 0 (int:0) to switch 1 (int:1). 
Otherwise, you can't send messages between cache and directory.
(Why do you think that L2 is connected to the directory?  They are separate 
components.  The only connection between components is via network links.)
...Greg




pathscale@xxxxxxx wrote:
> Why is that necessary?
>  
> I assume L2 can forward messages from L1 to directories. 
>  
>  
>  
>  
>
> 在2008-04-13，"Mike Marty" <mike.marty@xxxxxxxxx> 写道：
>
>     You need to create a link between int_node:0 and int_node:1
>
>     --Mike
>
>
>     2008/4/12 pathscale <pathscale@xxxxxxx <mailto:pathscale@xxxxxxx>>:
>
>          Hi,
>          
>         I'm using this topology file for protocol MSI_MOSI_CMP_DIRECTORY
>          
>         I got an error message
>          
>         failed assertion 'msg_destinations.count() == 0' at fn virtual
>         void PerfectSwitch::wakeup() in network/simple/PerfectSwitch.C:264
>         failed assertion 'msg_destinations.count() == 0' at fn virtual
>         void PerfectSwitch::wakeup() in network/simple/PerfectSwitch.C:264
>         At this point you might want to attach a debug to the running
>         and get to the
>         crash site; otherwise press enter to continue
>         PID: 18916
>          
>         Someone told me that there must be a route consists of internal
>         nodes between L1 to directory.
>         Is this true?
>          
>         Pls take a look at my topology file.
>          
>         Thanks
>          
>          
>         processors:4
>         procs_per_chip:4
>         L2banks:4
>         memories:4
>         bw_unit:10000
>          
>          
>         ext_node:L1Cache:0 int_node:0 link_latency:1 bw_multiplier:64
>         ext_node:L2Cache:0 int_node:0 link_latency:1 bw_multiplier:64
>         ext_node:Directory:0 int_node:1 link_latency:40 bw_multiplier:10
>          
>          
>         ext_node:L1Cache:1 int_node:0 link_latency:1 bw_multiplier:64
>         ext_node:L2Cache:1 int_node:0 link_latency:1 bw_multiplier:64
>         ext_node:Directory:1 int_node:1 link_latency:40 bw_multiplier:10
>          
>          
>          
>         ext_node:L1Cache:2 int_node:0 link_latency:1 bw_multiplier:64
>         ext_node:L2Cache:2 int_node:0 link_latency:1 bw_multiplier:64
>         ext_node:Directory:2 int_node:1 link_latency:40 bw_multiplier:10
>          
>          
>         ext_node:L1Cache:3 int_node:0 link_latency:1 bw_multiplier:64
>         ext_node:L2Cache:3 int_node:0 link_latency:1 bw_multiplier:64
>         ext_node:Directory:3 int_node:1 link_latency:40 bw_multiplier:10
>          
>          
>          
>          
>          
>          
>          
>          
>          
>          
>
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