Hi,
I am trying to run two simple workloads "Hello World" in two independent
CPUs which have different frequencies.
At first when I set CPU0'clock to "2GHz" and CPU1's clock to
"3GHz", everything seems to work fine.
But when I changed CPU1's clock from "3GHz" to "1GHz", there is only one
program has been executed.
If I changed CPU1's clock to "4GHz", it also only one program executed.
Can different CPUs run at any different frequencies in m5? Any suggestion
would be highly appreciated.
Regards,
Jerry
===================================================
More details about the config file and results:
The changes from the original example file se.py:
--- se.py 2008-04-15 10:06:02.000000000 +0800
+++ se0.py 2008-03-01 01:28:51.000000000 +0800
@@ -86,8 +86,8 @@
np = options.num_cpus
-system = System(cpu = [CPUClass(cpu_id=i) for i in xrange(np)],
- physmem = PhysicalMemory(range=AddrRange("512MB")),
membus = Bus(), mem_mode = test_mem_mode)
+system = System(cpu = [CPUClass(cpu_id=0,clock="2GHz"),
CPUClass(cpu_id=1,clock="3GHz"))],
+ physmem = PhysicalMemory(range=AddrRange("512MB")),
system.physmem.port = system.membus.port
@@ -106,7 +106,7 @@
system.cpu[i].connectMemPorts(system.tol2bus)
else:
system.cpu[i].connectMemPorts(system.membus)
- system.cpu[i].workload = process
+ system.cpu[i].workload = process[i]
if options.fastmem:
system.cpu[0].physmem_port = system.physmem.port
Command line running m5 :
$ build/ALPHA_SE/m5.debug configs/example/se.py
--cmd="/home/jerry/m5-2.0b5/tests/test-progs/hello/bin/alpha/linux/hello0;/home/jerry/m5-2.0b5/tests/test-progs/hello/bin/alpha/linux/hello1"
-d --cache -n2
The first running result:
...................
Global frequency set at 1000000000000 ticks per second
0: system.remote_gdb.listener: listening for remote gdb #0 on port 7000
0: system.remote_gdb.listener: listening for remote gdb #1 on port 7001
**** REAL SIMULATION ****
warn: Entering event queue @ 0. Starting simulation...
warn: Increasing stack size by one page.
warn: Increasing stack size by one page.
Hello World0!
Hello World1!
Exiting @ cycle 5536000 because target called exit()
Change CPU1's clock from "3GHz" to "3GHz":
--- se0.py 2008-04-15 11:09:02.000000000 +0800
+++ se1.py 2008-04-15 11:07:06.000000000 +0800
@@ -86,7 +86,7 @@
np = options.num_cpus
-system = System(cpu = [CPUClass(cpu_id=0,clock="2GHz"),
CPUClass(cpu_id=1,clock="3GHz")],
+system = System(cpu = [CPUClass(cpu_id=0,clock="2GHz"),
CPUClass(cpu_id=1,clock="1GHz")],
physmem = PhysicalMemory(range=AddrRange("512MB")),
membus = Bus(), mem_mode = test_mem_mode)
The second running result:
.........................
Global frequency set at 1000000000000 ticks per second
0: system.remote_gdb.listener: listening for remote gdb #0 on port 7000
0: system.remote_gdb.listener: listening for remote gdb #1 on port 7001
**** REAL SIMULATION ****
warn: Entering event queue @ 0. Starting simulation...
warn: Increasing stack size by one page.
warn: Increasing stack size by one page.
Hello World1!
Exiting @ cycle 5502000 because target called exit()
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