Linux (ARM processor) app and alternatives

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Message 1846144 - Posted: 3 Feb 2017, 12:09:49 UTC - in response to Message 1846136.  
Last modified: 3 Feb 2017, 12:14:27 UTC

So I think for now I just go with bash's time and wait until someone suggest what package I should install to get "real" time utility.

EDIT: sudo apt-get install time did the trick.
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Message 1846152 - Posted: 3 Feb 2017, 13:15:58 UTC - in response to Message 1846144.  

So I think for now I just go with bash's time and wait until someone suggest what package I should install to get "real" time utility.

EDIT: sudo apt-get install time did the trick.

Sorry, was at work otherwise i'd would have told you that,.

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Message 1846169 - Posted: 3 Feb 2017, 14:12:18 UTC - in response to Message 1846144.  
Last modified: 3 Feb 2017, 14:53:42 UTC

sudo apt-get install time did the trick.


I had to add this for Bench on one of my computers. I can't remember which one.

I reran the slow cycle counter version on ARM64 after clearing all the testData. It gets the same fast result in time:

KWSN-Linux-MBbench v2.1.08
Running on odroid64 at Fri 03 Feb 2017 05:37:23 AM UTC
----------------------------------------------------------------
Starting benchmark run...
----------------------------------------------------------------
Listing wu-file(s) in /testWUs :
reference_work_unit_r3215.wu

Listing executable(s) in /APPS :

Listing executable in /REF_APPS :
setiathome-8.slowcc.aarch64-unknown-linux-gnu
----------------------------------------------------------------
Current WU: reference_work_unit_r3215.wu

----------------------------------------------------------------
Running default app with command :... setiathome-8.slowcc.aarch64-unknown-linux-gnu -verb
Elapsed Time: ....................... 15161 seconds

----------------------------------------------------------------
Done with reference_work_unit_r3215.wu

====================================================================

Done with Benchmark run! Removing temporary files!
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Message 1846273 - Posted: 3 Feb 2017, 20:02:28 UTC - in response to Message 1846030.  
Last modified: 3 Feb 2017, 20:03:03 UTC

EDIT2: from the other side it uses double. How ARM handles double type?


I had not noticed this before that the chirp function takes two doubles and that the other functions are taking float pointers. From analyzeFuncs_vector.h:

typedef int  (*BaseLineSmooth_func)(sah_complex *, int, int, int);
typedef int (*GetPowerSpectrum_func)(sah_complex *, float*, int);
typedef int  (*ChirpData_func)(sah_complex *, sah_complex *, int, double, int, double);
typedef int (*Transpose_func)(int, int , float *, float *);


Is the assembly code expecting a float but getting a double?
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Message 1846276 - Posted: 3 Feb 2017, 20:23:50 UTC - in response to Message 1846273.  
Last modified: 3 Feb 2017, 20:27:17 UTC

I'm not sure how assembly version handles input arguments but really used version not assembly one but C-based one

Attempted to improve bench script adding BOINC computations suspension, but seems it doesn't work for Linux for some reason:

root@parallella:/usr/bin# boinccmd --set_run_mode never 172800
Operation failed: Error -1

boinccmd present, it lists this option in own options list... but attempt to execute it fails (and both cores still busy with SETI indeed).


And it fails both under user and root.

What it could be?
Error -1 doesn't provide hint...

 --set_run_mode mode duration       set run mode for given duration
   mode = always | auto | never

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Message 1846302 - Posted: 3 Feb 2017, 21:40:28 UTC - in response to Message 1846276.  

Error -1 is usually a problem with GUI RPC password. Try running the command in BOINC's data directory in /var/lib/boinc-client .
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Message 1846311 - Posted: 3 Feb 2017, 22:03:14 UTC - in response to Message 1846302.  
Last modified: 3 Feb 2017, 22:12:51 UTC

Error -1 is usually a problem with GUI RPC password. Try running the command in BOINC's data directory in /var/lib/boinc-client .

I tried that with --quit - it worked (from other places it resulted in -1 too).

So, what should I do to allow normal work from any location? Obviously I can't put bench in /var/lib/boinc-client ...

EDIT: indeed I attempted to set own password in gui_rpc_auth.cfg but was not able to connect from Windows host BOINC manager anyway.
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Message 1846316 - Posted: 3 Feb 2017, 22:16:45 UTC - in response to Message 1846311.  
Last modified: 3 Feb 2017, 22:18:25 UTC

Something like

boinccmd --passwd `cat /var/lib/boinc-client/gui_rpc_auth.cfg` command ...


(Those are backticks.)

For remote control manual says to use remote_hosts.cfg or --allow_remote_gui_rpc. allow_remote_gui_rpc is in cc_config.xml too.
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Message 1846323 - Posted: 3 Feb 2017, 22:25:28 UTC - in response to Message 1846316.  
Last modified: 3 Feb 2017, 22:35:18 UTC

Something like

boinccmd --passwd `cat /var/lib/boinc-client/gui_rpc_auth.cfg` command ...


Will try after current test finish.


For remote control manual says to use remote_hosts.cfg or --allow_remote_gui_rpc. allow_remote_gui_rpc is in cc_config.xml too.


yes, I read that. It also says that RPC always accepted inside same host. But it's not in my case.
So, should I add parallella's host IP to the list too?
Or just add 127.0.0.0 there?

For now i'll try with cc_config modification. If it will not help will try other options.
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Message 1846327 - Posted: 3 Feb 2017, 22:35:30 UTC - in response to Message 1846323.  

If password is set then it is always needed.
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Message 1846329 - Posted: 3 Feb 2017, 22:38:39 UTC
Last modified: 3 Feb 2017, 22:39:37 UTC

Well, initial results not very nice (for home-built binary):
Current WU: #WisGen1_v8.wu

----------------------------------------------------------------
Running default app with command :... setiathome_8.02_arm-unknown-linux-gnueabihf -st -verb -nog
./setiathome_8.02_arm-unknown-linux-gnueabihf -st -verb -nog 42.30 sec 35.42 sec 2.40 sec
Elapsed Time: ....................... 43 seconds

----------------------------------------------------------------
Running app with command : .......... setiathome-8.0.armv7l-unknown-linux-gnueabihf_R_default -st -verb -nog
./setiathome-8.0.armv7l-unknown-linux-gnueabihf_R_default -st -verb -nog 386.11 sec 378.48 sec 5.68 sec
Elapsed Time : ...................... 386 seconds
Speed compared to default : ......... 11 %
-----------------
Comparing results
Result : Strongly similar, Q= 99.99%

----------------------------------------------------------------
Done with #WisGen1_v8.wu


Same with second wisdom trainer.

stock:
setiathome_v8 8.00 Revision: 3378 g++ (Raspbian 4.9.2-10) 4.9.2
libboinc: BOINC 7.7.0

Work Unit Info:
...............
WU true angle range is :  424.000000
Getting CPU Capabilities from /proc/cpuinfo
features:  half thumb fastmult vfp edsp neon vfpv3 tls vfpd32 
 
Optimal function choices:
--------------------------------------------------------
                            name   timing   error
--------------------------------------------------------
                v_BaseLineSmooth (no other)

              v_GetPowerSpectrum 0.005161 0.00000  test
            vfp_GetPowerSpectrum 0.003134 0.00000  test
           neon_GetPowerSpectrum 0.003410 0.00000  test
            vfp_GetPowerSpectrum 0.003134 0.00000  choice

                     v_ChirpData 0.163041 0.00000  test
                   fpu_ChirpData 0.184977 1.51106  test
               fpu_opt_ChirpData 0.183226 0.00000  test
                     v_ChirpData 0.163041 0.00000  choice

                     v_Transpose 0.148885 0.00000  test
                    v_Transpose2 0.076535 0.00000  test
                    v_Transpose4 0.042304 0.00000  test
                    v_Transpose8 0.058710 0.00000  test
                 fftwf_transpose 0.027171 0.00000  test
                  v_pfTranspose2 0.070728 0.00000  test
                  v_pfTranspose4 0.041088 0.00000  test
                  v_pfTranspose8 0.067429 0.00000  test
                 v_vfpTranspose2 0.075300 0.00000  test
                 fftwf_transpose 0.027171 0.00000  choice

                   Test duration    29.97 seconds

my build:
setiathome_v8 8.00 Revision: 3623 g++ (Ubuntu/Linaro 4.9.2-10ubuntu13) 4.9.2
libboinc: BOINC 7.7.0

Work Unit Info:
...............
WU true angle range is :  424.000000
Getting CPU Capabilities from /proc/cpuinfo
features:  half thumb fastmult vfp edsp neon vfpv3 tls vfpd32 
 
Optimal function choices:
--------------------------------------------------------
                            name   timing   error
--------------------------------------------------------
                v_BaseLineSmooth (no other)

              v_GetPowerSpectrum 0.005160 0.00000  test
            vfp_GetPowerSpectrum 0.003151 0.00000  test
           neon_GetPowerSpectrum 0.003409 0.00000  test
            vfp_GetPowerSpectrum 0.003151 0.00000  choice

                     v_ChirpData 0.179222 0.00000  test
                   fpu_ChirpData 0.174099 1.51106  test
               fpu_opt_ChirpData 0.195143 0.00000  test
                     v_ChirpData 0.179222 0.00000  choice

                     v_Transpose 0.148799 0.00000  test
                    v_Transpose2 0.076601 0.00000  test
                    v_Transpose4 0.042456 0.00000  test
                    v_Transpose8 0.057253 0.00000  test
                 fftwf_transpose 0.027033 0.00000  test
                  v_pfTranspose2 0.071018 0.00000  test
                  v_pfTranspose4 0.041940 0.00000  test
                  v_pfTranspose8 0.068383 0.00000  test
                 v_vfpTranspose2 0.075311 0.00000  test
                 fftwf_transpose 0.027033 0.00000  choice

                   Test duration    28.57 seconds

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Message 1846332 - Posted: 3 Feb 2017, 22:46:42 UTC - in response to Message 1846329.  
Last modified: 3 Feb 2017, 22:47:01 UTC

So, ~30 seconds takes own benchmark (each task)
almost all rest of runtime for "wisdom trainer" task going to FFTW plan creation and writing wisdom.sah
As one can see, my build took enormous amount of time for that. Some difference with stock one here.

And another observation: function choices (!) and function elapsed times in this single-core-busy test were very different from ones from live run (supposed to be both-cores-busy one).
Anyone explored load behavior for multicore ARM before?
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Message 1846333 - Posted: 3 Feb 2017, 22:48:30 UTC - in response to Message 1846327.  

If password is set then it is always needed.

So should I make that file void?
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Message 1846358 - Posted: 4 Feb 2017, 0:37:26 UTC

More observations:

1)current codebase doesn't have ARM FPU initialization function that Mateusz codebase has.

2) even under Android on NEON-capable devices I saw VFP chirp used, not NEON. So, do we have example of device that uses neon_ChirpData and returns valid results? Android one of course cause for armhf this function disabled in stock codebase.

Unfortunately, all old v7 results removed on SETI beta so I can't look what original Mateuzs v7 binary really did on NEON (from code reading it should hard-select NEON chirp)
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Message 1846359 - Posted: 4 Feb 2017, 0:44:13 UTC
Last modified: 4 Feb 2017, 0:52:57 UTC

Where human-readable defines for tags of .eabi_attribute located?

Accordingly to https://sourceware.org/binutils/docs/as/ARM-Directives.html
.eabi_attribute tag, value
Set the EABI object attribute tag to value.
The tag is either an attribute number, or one of the following: Tag_CPU_raw_name, Tag_CPU_name, Tag_CPU_arch, Tag_CPU_arch_profile, Tag_ARM_ISA_use, Tag_THUMB_ISA_use, Tag_FP_arch, Tag_WMMX_arch, Tag_Advanced_SIMD_arch, Tag_PCS_config, Tag_ABI_PCS_R9_use, Tag_ABI_PCS_RW_data, Tag_ABI_PCS_RO_data, Tag_ABI_PCS_GOT_use, Tag_ABI_PCS_wchar_t, Tag_ABI_FP_rounding, Tag_ABI_FP_denormal, Tag_ABI_FP_exceptions, Tag_ABI_FP_user_exceptions, Tag_ABI_FP_number_model, Tag_ABI_align_needed, Tag_ABI_align_preserved, Tag_ABI_enum_size, Tag_ABI_HardFP_use, Tag_ABI_VFP_args, Tag_ABI_WMMX_args, Tag_ABI_optimization_goals, Tag_ABI_FP_optimization_goals, Tag_compatibility, Tag_CPU_unaligned_access, Tag_FP_HP_extension, Tag_ABI_FP_16bit_format, Tag_MPextension_use, Tag_DIV_use, Tag_nodefaults, Tag_also_compatible_with, Tag_conformance, Tag_T2EE_use, Tag_Virtualization_use

The value is either a number, "string", or number, "string" depending on the tag.

Note - the following legacy values are also accepted by tag: Tag_VFP_arch, Tag_ABI_align8_needed, Tag_ABI_align8_preserved, Tag_VFP_HP_extension,



So, these human-readable tags should be defined somewhere...

EDIT: https://gcc.gnu.org/ml/gcc-patches/2011-10/msg00961.html arm.h maybe...
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Message 1846431 - Posted: 4 Feb 2017, 8:06:02 UTC - in response to Message 1846329.  

Being much slower on startup, home-made build wins in VLAR:

====================================================================
Current WU: PG0009_v8.wu

----------------------------------------------------------------
Running default app with command :... setiathome_8.02_arm-unknown-linux-gnueabihf -st -verb -nog
./setiathome_8.02_arm-unknown-linux-gnueabihf -st -verb -nog 9510.79 sec 9446.96 sec 63.05 sec
Elapsed Time: ....................... 9511 seconds

----------------------------------------------------------------
Running app with command : .......... setiathome-8.0.armv7l-unknown-linux-gnueabihf_R_default -st -verb -nog
./setiathome-8.0.armv7l-unknown-linux-gnueabihf_R_default -st -verb -nog 7955.50 sec 7888.90 sec 65.37 sec
Elapsed Time : ...................... 7956 seconds
Speed compared to default : ......... 119 %
-----------------
Comparing results
Result : Strongly similar, Q= 100.0%

----------------------------------------------------------------
Done with PG0009_v8.wu
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Message 1846432 - Posted: 4 Feb 2017, 8:18:10 UTC
Last modified: 4 Feb 2017, 8:23:08 UTC

How it "should" look:
Attribute Section: aeabi
File Attributes
  Tag_CPU_name: "7-A"
  Tag_CPU_arch: v7
  Tag_CPU_arch_profile: Application
  Tag_ARM_ISA_use: Yes
  Tag_THUMB_ISA_use: Thumb-2
  Tag_FP_arch: VFPv3
  Tag_Advanced_SIMD_arch: NEONv1
  Tag_ABI_PCS_wchar_t: 4
  Tag_ABI_FP_rounding: Needed
  Tag_ABI_FP_denormal: Needed
  Tag_ABI_FP_exceptions: Needed
  Tag_ABI_FP_number_model: IEEE 754
  Tag_ABI_align_needed: 8-byte
  Tag_ABI_align_preserved: 8-byte, except leaf SP
  Tag_ABI_enum_size: int
  Tag_ABI_HardFP_use: SP and DP
  Tag_ABI_VFP_args: VFP registers
  Tag_CPU_unaligned_access: v6


instead of

		.eabi_attribute 27, 3
		.eabi_attribute 28, 1
	
                .eabi_attribute 20, 1
                .eabi_attribute 21, 1
                .eabi_attribute 23, 3
                .eabi_attribute 24, 1
                .eabi_attribute 25, 1
                .eabi_attribute 26, 2
                .eabi_attribute 30, 2
                .eabi_attribute 18, 4


And immediately we can see unneeded tags for MultiBeam:
Tag_ABI_FP_denormal: Needed
Tag_ABI_FP_exceptions: Needed
both are wrong.

Also: Tag_THUMB_ISA_use: Thumb-2
Does Parallella support Thumb-2 ? It was said "thumb", noth thumb-2 ...
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Message 1846436 - Posted: 4 Feb 2017, 9:29:22 UTC
Last modified: 4 Feb 2017, 9:30:49 UTC

Interesting to compare options for separate objects and whole binary:

analyzeFuncs_vfp.o
parallella@parallella:~/seti_boinc/client$ readelf -A analyzeFuncs_vfp.o
Attribute Section: aeabi
File Attributes
  Tag_CPU_name: "6"
  Tag_CPU_arch: v6
  Tag_ARM_ISA_use: Yes
  Tag_THUMB_ISA_use: Thumb-1
  Tag_FP_arch: VFPv2
  Tag_ABI_PCS_wchar_t: 4
  Tag_ABI_FP_denormal: Needed
  Tag_ABI_FP_exceptions: Needed
  Tag_ABI_FP_number_model: IEEE 754
  Tag_ABI_align_needed: 8-byte
  Tag_ABI_align_preserved: 8-byte, except leaf SP
  Tag_ABI_enum_size: int
  Tag_ABI_HardFP_use: SP and DP
  Tag_ABI_VFP_args: VFP registers
  Tag_ABI_optimization_goals: Aggressive Speed

analyzeFuncs_neon.o
parallella@parallella:~/seti_boinc/client$ readelf -A analyzeFuncs_neon.o
Attribute Section: aeabi
File Attributes
  Tag_CPU_name: "7-A"
  Tag_CPU_arch: v7
  Tag_CPU_arch_profile: Application
  Tag_ARM_ISA_use: Yes
  Tag_THUMB_ISA_use: Thumb-2
  Tag_FP_arch: VFPv3
  Tag_Advanced_SIMD_arch: NEONv1
  Tag_ABI_PCS_wchar_t: 4
  Tag_ABI_FP_denormal: Needed
  Tag_ABI_FP_exceptions: Needed
  Tag_ABI_FP_number_model: IEEE 754
  Tag_ABI_align_needed: 8-byte
  Tag_ABI_align_preserved: 8-byte, except leaf SP
  Tag_ABI_enum_size: int
  Tag_ABI_HardFP_use: SP and DP
  Tag_ABI_VFP_args: VFP registers
  Tag_ABI_optimization_goals: Aggressive Speed


seti_boinc-main.o
parallella@parallella:~/seti_boinc/client$ readelf -A seti_boinc-main.o
Attribute Section: aeabi
File Attributes
  Tag_CPU_name: "7-A"
  Tag_CPU_arch: v7
  Tag_CPU_arch_profile: Application
  Tag_ARM_ISA_use: Yes
  Tag_THUMB_ISA_use: Thumb-2
  Tag_FP_arch: VFPv3-D16
  Tag_ABI_PCS_wchar_t: 4
  Tag_ABI_FP_number_model: Finite
  Tag_ABI_align_needed: 8-byte
  Tag_ABI_align_preserved: 8-byte, except leaf SP
  Tag_ABI_enum_size: int
  Tag_ABI_HardFP_use: SP and DP
  Tag_ABI_VFP_args: VFP registers
  Tag_ABI_optimization_goals: Aggressive Speed
  Tag_CPU_unaligned_access: v6


app binary:
parallella@parallella:~/seti_boinc/client$ readelf -A setiathome-8.0.armv7l-unknown-linux-gnueabihf
Attribute Section: aeabi
File Attributes
  Tag_CPU_name: "7-A"
  Tag_CPU_arch: v7
  Tag_CPU_arch_profile: Application
  Tag_ARM_ISA_use: Yes
  Tag_THUMB_ISA_use: Thumb-2
  Tag_FP_arch: VFPv3
  Tag_Advanced_SIMD_arch: NEONv1
  Tag_ABI_PCS_wchar_t: 4
  Tag_ABI_FP_rounding: Needed
  Tag_ABI_FP_denormal: Needed
  Tag_ABI_FP_exceptions: Needed
  Tag_ABI_FP_number_model: IEEE 754
  Tag_ABI_align_needed: 8-byte
  Tag_ABI_align_preserved: 8-byte, except leaf SP
  Tag_ABI_enum_size: int
  Tag_ABI_HardFP_use: SP and DP
  Tag_ABI_VFP_args: VFP registers
  Tag_CPU_unaligned_access: v6

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Message 1846451 - Posted: 4 Feb 2017, 11:33:41 UTC - in response to Message 1846436.  

So I will try with finite math, w/o directly specifying hard float and with NEON Chirp enabled.
PG set looks too long for this tiny device. Each task takes ~2-3 hours... not very comfortable for trying many builds...
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Message 1846581 - Posted: 4 Feb 2017, 16:57:26 UTC
Last modified: 4 Feb 2017, 16:59:04 UTC

Current version of Linux KWSN benchmark isn't quite suitable to separate startup overhead and steady processing parts.
It deletes all cache info between runs:

rm -f boinc_* state.sah result.sah init_data.xml stderr.txt wisdom.sah work_unit.sah *.wisdom* *.bin*

Underlined parts should be removed from script to allow real wisdom caching/retrieving between runs (also that make wisgen tasks meaningful, currently they are quite meaningless, especially in double quantity as usually used for Windows apps)
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