MIPS32 port

ChibiOS public support forum for topics related to the micro-controllers based on MIPS32 cores.
pito
Posts: 199
Joined: Sun Nov 06, 2011 3:54 pm

Re: MIPS32 port

Postby pito » Wed Jan 16, 2013 11:12 pm

@72MHz

Code: Select all

ch> test

*** ChibiOS/RT test suite
***
*** Kernel:       2.5.2unstable
*** Compiled:     Jan 16 2013 - 23:43:11
*** Compiler:     GCC 4.5.1 chipKIT Compiler for PIC32 MCUs v1.30-20110506
*** Architecture: MIPS32
*** Core Variant: MIPS32r2
*** Port Info:    Pure MIPS mode
*** Platform:     MIPS-PIC32MX

----------------------------------------------------------------------------
--- Test Case 1.1 (Threads, enqueuing test #1)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 1.2 (Threads, enqueuing test #2)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 1.3 (Threads, priority change)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 1.4 (Threads, delays)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 2.1 (Semaphores, enqueuing)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 2.2 (Semaphores, timeout)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 2.3 (Semaphores, atomic signal-wait)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 2.4 (Binary Semaphores, functionality)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 3.1 (Mutexes, priority enqueuing test)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 3.2 (Mutexes, priority inheritance, simple case)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 3.3 (Mutexes, priority inheritance, complex case)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 3.4 (Mutexes, priority return)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 3.5 (Mutexes, status)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 3.6 (CondVar, signal test)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 3.7 (CondVar, broadcast test)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 3.8 (CondVar, boost test)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 4.1 (Messages, loop)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 5.1 (Mailboxes, queuing and timeouts)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 6.1 (Events, registration and dispatch)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 6.2 (Events, wait and broadcast)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 6.3 (Events, timeouts)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 7.1 (Heap, allocation and fragmentation test)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 8.1 (Memory Pools, queue/dequeue)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 9.1 (Dynamic APIs, threads creation from heap)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 9.2 (Dynamic APIs, threads creation from memory pool)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 9.3 (Dynamic APIs, registry and references)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 10.1 (Queues, input queues)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 10.2 (Queues, output queues)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.1 (Benchmark, messages #1)
--- Score : 188998 msgs/S, 377996 ctxswc/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.2 (Benchmark, messages #2)
--- Score : 159499 msgs/S, 318998 ctxswc/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.3 (Benchmark, messages #3)
--- Score : 159499 msgs/S, 318998 ctxswc/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.4 (Benchmark, context switch)
--- Score : 527984 ctxswc/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.5 (Benchmark, threads, full cycle)
--- Score : 32333 threads/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.6 (Benchmark, threads, create only)
--- Score : 34778 threads/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.7 (Benchmark, mass reschedule, 5 threads)
--- Score : 53000 reschedules/S, 318000 ctxswc/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.8 (Benchmark, round robin context switching)
--- Score : 369428 ctxswc/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.9 (Benchmark, I/O Queues throughput)
--- Score : 975996 bytes/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.10 (Benchmark, virtual timers set/reset)
--- Score : 676818 timers/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.11 (Benchmark, semaphores wait/signal)
--- Score : 785536 wait+signal/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.12 (Benchmark, mutexes lock/unlock)
--- Score : 843244 lock+unlock/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.13 (Benchmark, RAM footprint)
--- System: 620 bytes
--- Thread: 76 bytes
--- Timer : 20 bytes
--- Semaph: 12 bytes
--- EventS: 4 bytes
--- EventL: 16 bytes
--- Mutex : 16 bytes
--- CondV.: 8 bytes
--- Queue : 36 bytes
--- MailB.: 40 bytes
--- Result: SUCCESS
----------------------------------------------------------------------------

Final result: SUCCESS


@120MHz

Code: Select all

ch> test

*** ChibiOS/RT test suite
***
*** Kernel:       2.5.2unstable
*** Compiled:     Jan 16 2013 - 23:05:58
*** Compiler:     GCC 4.5.1 chipKIT Compiler for PIC32 MCUs v1.30-20110506
*** Architecture: MIPS32
*** Core Variant: MIPS32r2
*** Port Info:    Pure MIPS mode
*** Platform:     MIPS-PIC32MX

----------------------------------------------------------------------------
--- Test Case 1.1 (Threads, enqueuing test #1)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 1.2 (Threads, enqueuing test #2)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 1.3 (Threads, priority change)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 1.4 (Threads, delays)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 2.1 (Semaphores, enqueuing)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 2.2 (Semaphores, timeout)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 2.3 (Semaphores, atomic signal-wait)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 2.4 (Binary Semaphores, functionality)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 3.1 (Mutexes, priority enqueuing test)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 3.2 (Mutexes, priority inheritance, simple case)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 3.3 (Mutexes, priority inheritance, complex case)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 3.4 (Mutexes, priority return)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 3.5 (Mutexes, status)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 3.6 (CondVar, signal test)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 3.7 (CondVar, broadcast test)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 3.8 (CondVar, boost test)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 4.1 (Messages, loop)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 5.1 (Mailboxes, queuing and timeouts)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 6.1 (Events, registration and dispatch)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 6.2 (Events, wait and broadcast)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 6.3 (Events, timeouts)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 7.1 (Heap, allocation and fragmentation test)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 8.1 (Memory Pools, queue/dequeue)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 9.1 (Dynamic APIs, threads creation from heap)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 9.2 (Dynamic APIs, threads creation from memory pool)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 9.3 (Dynamic APIs, registry and references)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 10.1 (Queues, input queues)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 10.2 (Queues, output queues)
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.1 (Benchmark, messages #1)
--- Score : 250999 msgs/S, 501998 ctxswc/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.2 (Benchmark, messages #2)
--- Score : 210666 msgs/S, 421332 ctxswc/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.3 (Benchmark, messages #3)
--- Score : 210666 msgs/S, 421332 ctxswc/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.4 (Benchmark, context switch)
--- Score : 696000 ctxswc/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.5 (Benchmark, threads, full cycle)
--- Score : 50400 threads/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.6 (Benchmark, threads, create only)
--- Score : 54800 threads/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.7 (Benchmark, mass reschedule, 5 threads)
--- Score : 72600 reschedules/S, 435600 ctxswc/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.8 (Benchmark, round robin context switching)
--- Score : 498960 ctxswc/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.9 (Benchmark, I/O Queues throughput)
--- Score : 1458660 bytes/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.10 (Benchmark, virtual timers set/reset)
--- Score : 943218 timers/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.11 (Benchmark, semaphores wait/signal)
--- Score : 998996 wait+signal/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.12 (Benchmark, mutexes lock/unlock)
--- Score : 1033328 lock+unlock/S
--- Result: SUCCESS
----------------------------------------------------------------------------
--- Test Case 11.13 (Benchmark, RAM footprint)
--- System: 620 bytes
--- Thread: 76 bytes
--- Timer : 20 bytes
--- Semaph: 12 bytes
--- EventS: 4 bytes
--- EventL: 16 bytes
--- Mutex : 16 bytes
--- CondV.: 8 bytes
--- Queue : 36 bytes
--- MailB.: 40 bytes
--- Result: SUCCESS
----------------------------------------------------------------------------

Final result: SUCCESS
ch>


PS: do we have cache and wait-states set to max performance?
Last edited by pito on Thu Jan 17, 2013 12:07 am, edited 1 time in total.

Dmytro
Posts: 98
Joined: Sun Oct 07, 2012 11:49 am

Re: MIPS32 port

Postby Dmytro » Thu Jan 17, 2013 12:03 am

Currently it's not possible to generate iHEX with generic obj-copy. It's a known issues(http://forum.pinguino.cc/showthread.php?tid=3267 for instance) that was solved by some toolchain guru. Personally I prefer to wait for official fix.
Since pic32prog supports SREC I've pushed a changeset to generate this thing. I couldn't try pic32prog myself as it doesn't support PICKIT3. However the dump of SREC file looks good for me.

cheers,
-- dmytro

Dmytro
Posts: 98
Joined: Sun Oct 07, 2012 11:49 am

Re: MIPS32 port

Postby Dmytro » Thu Jan 17, 2013 12:09 am

pito wrote:PS: do we have cache and wait-states set to max performance?
Yes, at least if I didn't make a mistake there. You expect to see higher values?

pito
Posts: 199
Joined: Sun Nov 06, 2011 3:54 pm

Re: MIPS32 port

Postby pito » Thu Jan 17, 2013 12:15 am

We use objcopy for hex generation in retrobsd and it works ie:

Code: Select all

$(OBJCOPY) -O ihex --change-addresses=0x80000000 $@ unix.hex

Maybe an issue with the address there..

pito
Posts: 199
Joined: Sun Nov 06, 2011 3:54 pm

Re: MIPS32 port

Postby pito » Thu Jan 17, 2013 12:21 am

Yes, at least if I didn't make a mistake there. You expect to see higher values?

A very good question :)
Frankly, I am comparing the values with ARM stuff just now. I did the test with my stm32vl disco @24. @48, @56MHz and with stm32f4disco @168MHz and 216MHz. I always saw a linear function - results vs. cpu_clock. That is not the case with this pic32 setup.. (you may see ie. 72MHz vs. 120MHz, I would expect ~1.66x speed-up in all values, provided the ws setting is the same for both speeds).
Maybe you have to check caches settings and wait states settings (ram=0, flash=2).
Generally, I would expect the mips to be faster than the arm (at least marketing people do say that..) clock to clock. My assumption is it has been built with mips32, though.
PS: For example - the stm32f100 @56Mhz is faster within the test than the stm32f103 @72MHz (stm32f100 has got flash wait states hardwired to zero).
p.

Dmytro
Posts: 98
Joined: Sun Oct 07, 2012 11:49 am

Re: MIPS32 port

Postby Dmytro » Thu Jan 17, 2013 1:09 am

Thanks for pointing on possible solution around iHex generation. So far objcopy can generate with this option w/o any issue but MPLAB X does not flash it correctly. I'll try to dig in this direction to find correction solution.
BTW, does SREC works for you at least as a temporary solution?

It's not fair to compare mips and arm, especially Cortex and PIC32(which has m4k core). PIC32 has tiny cache(16 4-words cache lines if I'm not mistaken shared between data and text) and access to the flash might be significantly slower than on STM. I believe that after adding perf counters you'll see very high cache miss rate there.
Anyway, I'll doublecheck that too be able to sleep well ;)

/D

pito
Posts: 199
Joined: Sun Nov 06, 2011 3:54 pm

Re: MIPS32 port

Postby pito » Thu Jan 17, 2013 1:20 am

pic32 .. 1.56 dmips/mhz
cortex m3 .. 1.25 dmips/mhz
those values are "core only" benchmarks, though..

pito
Posts: 199
Joined: Sun Nov 06, 2011 3:54 pm

Re: MIPS32 port

Postby pito » Thu Jan 17, 2013 2:58 pm

A comparison PIC32MX (opt1) vs. STM32F103, both @72MHz, GNU comp.

pic32mx_vs_stm32f103.jpg
pic32mx_vs_stm32f103.jpg (80.25 KiB) Viewed 5114 times
Last edited by pito on Thu Jan 17, 2013 5:09 pm, edited 4 times in total.

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Giovanni
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Re: MIPS32 port

Postby Giovanni » Thu Jan 17, 2013 3:07 pm

Few notes.

Take benchmark results with a grain of salt, the MIPS results could be affected by the number of internal registers which could give it a disadvantage in tests affected by context switch time (up to 11.8) and be an advantage in other tests.

Those results seem to confirm this, I see a similar pattern on the Power Architecture devices I am working on.

Giovanni

pito
Posts: 199
Joined: Sun Nov 06, 2011 3:54 pm

Re: MIPS32 port

Postby pito » Thu Jan 17, 2013 4:35 pm

A comparison - optimization level 1 vs. 2

pic32mx optim_level_comp.jpg
pic32mx optim_level_comp.jpg (74.97 KiB) Viewed 5112 times


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