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What flavor of Linix to install?

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#51 brave_ulysses

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Posted 15 February 2020 - 09:16 PM

first off: championship benchmark results. i'm jealous!

 

 

# as root

lspci -vv

 

look for lines starting with LnkSta:

 

81:00.0 VGA compatible controller: NVIDIA Corporation GP106 [GeForce GTX 1060 3GB] (rev a1) (prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. GP106 [GeForce GTX 1060 3GB]
Physical Slot: 5
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 105
NUMA node: 1
Region 0: Memory at d8000000 (32-bit, non-prefetchable) [size=16M]
Region 1: Memory at e0000000 (64-bit, prefetchable) [size=256M]
Region 3: Memory at f0000000 (64-bit, prefetchable) [size=32M]
Region 5: I/O ports at c000 [size=128]
Expansion ROM at 000c0000 [virtual] [disabled] [size=128K]
Capabilities: [60] Power Management version 3
  Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
  Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+
  Address: 00000000fee001d8  Data: 0000
Capabilities: [78] Express (v2) Legacy Endpoint, MSI 00
  DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s unlimited, L1 <64us
   ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
  DevCtl: CorrErr- NonFatalErr+ FatalErr+ UnsupReq-
   RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+
   MaxPayload 256 bytes, MaxReadReq 4096 bytes
  DevSta: CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr- TransPend-
  LnkCap: Port #0, Speed 8GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <1us, L1 <4us
   ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+
  LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+
   ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
  LnkSta: Speed 8GT/s (ok), Width x8 (downgraded)
   TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  DevCap2: Completion Timeout: Range AB, TimeoutDis+, NROPrPrP-, LTR-
    10BitTagComp-, 10BitTagReq-, OBFF Via message, ExtFmt-, EETLPPrefix-
    EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-
    FRS-
    AtomicOpsCap: 32bit- 64bit- 128bitCAS-
  DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled
    AtomicOpsCtl: ReqEn-
  LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis-
    Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
    Compliance De-emphasis: -6dB
  LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete+, EqualizationPhase1+
    EqualizationPhase2+, EqualizationPhase3+, LinkEqualizationRequest-
Capabilities: [100 v1] Virtual Channel
  Caps: LPEVC=0 RefClk=100ns PATEntryBits=1
  Arb: Fixed- WRR32- WRR64- WRR128-
  Ctrl: ArbSelect=Fixed
  Status: InProgress-
  VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
   Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
   Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=01
   Status: NegoPending- InProgress-
Capabilities: [128 v1] Power Budgeting <?>
Capabilities: [420 v2] Advanced Error Reporting
  UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
  UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq+ ACSViol-
  UESvrt: DLP+ SDES+ TLP+ FCP+ CmpltTO+ CmpltAbrt+ UnxCmplt+ RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
  CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr-
  CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr+
  AERCap: First Error Pointer: 00, ECRCGenCap- ECRCGenEn- ECRCChkCap- ECRCChkEn-
   MultHdrRecCap- MultHdrRecEn- TLPPfxPres- HdrLogCap-
  HeaderLog: 00000000 00000000 00000000 00000000
Capabilities: [600 v1] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?>
Capabilities: [900 v1] Secondary PCI Express
  LnkCtl3: LnkEquIntrruptEn-, PerformEqu-
  LaneErrStat: 0
Kernel driver in use: nvidia
Kernel modules: nvidiafb, nouveau, nvidia_drm, nvidia

Is there a way to tell if the PCI lanes are running at x16 or x8? 

 

the board manual is specific about use of the m.2 slots. Certain slots will conflict with certain SATA channels due to bandwidth conflicts and PCI lane limits. No mention about conflicts with the PCI slots is mentioned.


Edited by brave_ulysses, 15 February 2020 - 09:18 PM.


#52 Oleg Astro

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Posted 16 February 2020 - 08:49 AM

Dan,

you car run the test y-cruncher - A Multi-Threaded Pi-Program



#53 Dan Finnerty

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Posted 16 February 2020 - 02:19 PM

brave_ulysses,

 

I gave your lspci -vv command a whirl. I used sudo to get root privileges. I'm no t sure how to interpret results. greping "LnkSta" finds multiple instances, with speeds ranging from 2.5 GT/s to 16 GT/s. Widths ranging from x1 to x16. I can't see how to identify what devices go with each entry. In particular I would like to identify which is the graphics card:

 LnkSta: Speed 8GT/s, Width x4, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
  LnkSta: Speed 8GT/s, Width x4, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
  LnkSta: Speed 8GT/s, Width x4, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 8GT/s, Width x4, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt+
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
  LnkSta: Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 16GT/s, Width x8, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
  LnkSta: Speed 16GT/s, Width x8, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 8GT/s, Width x4, TrErr- Train- SlotClk+ DLActive+ BWMgmt- ABWMgmt-
  LnkSta: Speed 8GT/s, Width x4, TrErr- Train- SlotClk+ DLActive+ BWMgmt- ABWMgmt-
  LnkSta: Speed 8GT/s, Width x2, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
  LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
  LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
  LnkSta: Speed 8GT/s, Width x4, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 8GT/s, Width x4, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 8GT/s, Width x4, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 8GT/s, Width x2, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  LnkSta: Speed 16GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-

 

There is a device number in the "header" for each block of text. Is there a way to determine which is the graphics card?

 

Its been years since I did serious work on Unix workstations. Dejavu. I've got a lot to remember, but is actually kinda fun, Now that I have a functioning version of linux running, I can play in the sandbox all I want.



#54 Dan Finnerty

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Posted 16 February 2020 - 02:29 PM

Oleg, this is showing my linux ignorance. I downloaded the dynamic verson, untared it. But how do install or run it?

 

Dan,

you car run the test y-cruncher - A Multi-Threaded Pi-Program



#55 brave_ulysses

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Posted 16 February 2020 - 02:42 PM

my sed and grep skills failed me for a craftier solution...

 

lspci -vv | grep -e "^[[:alnum:]]" -e LnkSta: -e LnkCap: | grep VGA -A2
81:00.0 VGA compatible controller: NVIDIA Corporation GP106 [GeForce GTX 1060 3GB] (rev a1) (prog-if 00 [VGA controller])
  LnkCap: Port #0, Speed 8GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <1us, L1 <4us
  LnkSta: Speed 8GT/s (ok), Width x8 (downgraded)

 

this works also

 

lspci -vv | less

 

search for VGA



#56 Oleg Astro

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Posted 16 February 2020 - 03:28 PM

Oleg, this is showing my linux ignorance. I downloaded the dynamic verson, untared it. But how do install or run it?

You need y-cruncher binary without any installation:

cd y-cruncher v0.7.8.9503-dynamic
./y-cruncher

Attached Thumbnails

  • dynamic2.png


#57 Dan Finnerty

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Posted 16 February 2020 - 07:33 PM

Oleg, I can run this up to 500,000,000 digits. it crashes with an exception error with 1,000,000,000 digits. Here is the successful case:

 

Start Time: Sun Feb 16 16:26:08 2020
End Time:   Sun Feb 16 16:26:19 2020

Total Computation Time:     9.142 seconds  ( 0.152 minutes )
Start-to-End Wall Time:     10.668 seconds  ( 0.178 minutes )

CPU Utilization:         5589.08 %  +  456.55 % kernel overhead
Multi-core Efficiency:     87.33 %  +    7.13 % kernel overhead

Last Decimal Digits:  Pi
3896531789 0364496761 5664275325 5483742003 7847987772  :  499,999,950
5002477883 0364214864 5906800532 7052368734 3293261427  :  500,000,000

Spot Check: Good through 500,000,000

Version:              0.7.8.9503 (Linux/17-ZN1 ~ Yukina)
Processor(s):         AMD Ryzen Threadripper 3970X 32-Core Processor
Topology:             64 threads / 32 cores / 1 socket / 1 NUMA node
Usable Memory:        135,099,609,088 ( 126 GiB)
CPU Base Frequency:   3,700,092,944 Hz

Validation File: Pi - 20200216-162619.txt

 

Here is the crashed case.

option: 6

Constant:   Pi
Algorithm:  Chudnovsky (1988)

Decimal Digits:       1,000,000,000
Hexadecimal Digits:   Disabled

Computation Mode:     Ram Only
Multi-Threading:      Cilk Plus Work-Stealing  ->  64 / 64

Start Time: Sun Feb 16 16:31:32 2020

Working Memory...  4.75 GiB  (locked, spread: 100%/1)
Twiddle Tables...   152 MiB  (locked, spread: 100%/1)

Begin Computation:

Series CommonP2B3...  70,513,681 terms  (Expansion Factor = 2.699)
Time:    15.928 seconds  ( 0.265 minutes )                                    
Large Division...
Time:    0.951 seconds  ( 0.016 minutes )                                     
InvSqrt(10005)...
Time:    0.597 seconds  ( 0.010 minutes )                                     
Large Multiply...

Time:    0.412 seconds  ( 0.007 minutes )

Exception Encountered: ConvolutionFailedException

Coefficient is too large.

 

 

Any idea what has gone wrong?



#58 Dan Finnerty

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Posted 16 February 2020 - 08:09 PM

brave_ulysses,

 

Here is what I get running your command line:

 

dan@Ripper:~/Downloads/y-cruncher-v0.7.8.9503-dynamic$ sudo lspci -vv | grep -e "^[[:alnum:]]" -e LnkSta: -e LnkCap: | grep VGA -A2
21:00.0 VGA compatible controller: NVIDIA Corporation Device 1e04 (rev a1) (prog-if 00 [VGA controller])
  LnkCap: Port #0, Speed 8GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <512ns, L1 <16us
  LnkSta: Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
dan@Ripper:~/Downloads/y-cruncher-v0.7.8.9503-dynamic$

 

So it looks like the graphics card is running PCIe x16. I'm surprised at the LknSta reported speed of only 2.5GT/s. but I really don't know what is reasonable. I have a msi geforce RTX 2080i.

 

my sed and grep skills failed me for a craftier solution...

 

lspci -vv | grep -e "^[[:alnum:]]" -e LnkSta: -e LnkCap: | grep VGA -A2
81:00.0 VGA compatible controller: NVIDIA Corporation GP106 [GeForce GTX 1060 3GB] (rev a1) (prog-if 00 [VGA controller])
  LnkCap: Port #0, Speed 8GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <1us, L1 <4us
  LnkSta: Speed 8GT/s (ok), Width x8 (downgraded)

 

this works also

 

lspci -vv | less

 

search for VGA


Edited by Dan Finnerty, 16 February 2020 - 08:37 PM.


#59 brave_ulysses

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Posted 16 February 2020 - 08:20 PM

are you running the nvidia drivers?

 

lspci -vv | grep -e "^[[:alnum:]]" -e LnkSta: -e LnkCap: -e driver | grep VGA -A3
81:00.0 VGA compatible controller: NVIDIA Corporation GP106 [GeForce GTX 1060 3GB] (rev a1) (prog-if 00 [VGA controller])
  LnkCap: Port #0, Speed 8GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <1us, L1 <4us
  LnkSta: Speed 8GT/s (ok), Width x8 (downgraded)
Kernel driver in use: nvidia

 

not sure what distro you are using. here are some instructions for ubuntu-ish types

 

sudo add-apt-repository ppa:graphics-drivers/ppa

sudo apt update

sudo apt install nvidia-390

 

some more recent versions will be available

sudo apt search nvidia-4
Sorting... Done
Full Text Search... Done
linux-modules-nvidia-418-oem/focal 5.4.0-14.17 amd64
  Extra drivers for nvidia-418 for the generic flavour (dummy transitional package)

linux-modules-nvidia-418-oem-osp1/focal 5.4.0-14.17 amd64
  Extra drivers for nvidia-418 for the generic flavour (dummy transitional package)

linux-modules-nvidia-430-5.3.0-1008-oracle/focal 5.3.0-1008.9 amd64
  Linux kernel nvidia modules for version 5.3.0-1008

linux-modules-nvidia-430-5.3.0-1009-azure/focal 5.3.0-1009.10 amd64
  Linux kernel nvidia modules for version 5.3.0-1009

linux-modules-nvidia-430-5.3.0-1010-aws/focal 5.3.0-1010.11 amd64
  Linux kernel nvidia modules for version 5.3.0-1010

linux-modules-nvidia-430-5.3.0-1011-gcp/focal 5.3.0-1011.12 amd64
  Linux kernel nvidia modules for version 5.3.0-1011

linux-modules-nvidia-430-aws/focal 5.3.0-1010.11 amd64
  Extra drivers for nvidia-430 for the aws flavour

linux-modules-nvidia-430-azure/focal 5.3.0-1009.10 amd64
  Extra drivers for nvidia-430 for the azure flavour

linux-modules-nvidia-430-gcp/focal 5.3.0-1011.12 amd64
  Extra drivers for nvidia-430 for the gcp flavour

linux-modules-nvidia-430-generic/focal 5.4.0-14.17 amd64
  Extra drivers for nvidia-430 for the generic flavour (dummy transitional package)

linux-modules-nvidia-430-lowlatency/focal 5.4.0-14.17 amd64
  Extra drivers for nvidia-430 for the generic flavour (dummy transitional package)

linux-modules-nvidia-430-oracle/focal 5.3.0-1008.9 amd64
  Extra drivers for nvidia-430 for the oracle flavour

linux-modules-nvidia-440-5.4.0-1002-oem/focal 5.4.0-1002.4 amd64
  Linux kernel nvidia modules for version 5.4.0-1002

linux-modules-nvidia-440-5.4.0-14-generic/focal 5.4.0-14.17 amd64
  Linux kernel nvidia modules for version 5.4.0-14

linux-modules-nvidia-440-5.4.0-14-lowlatency/focal 5.4.0-14.17 amd64
  Linux kernel nvidia modules for version 5.4.0-14

linux-modules-nvidia-440-5.4.0-9-generic/focal 5.4.0-9.12 amd64
  Linux kernel nvidia modules for version 5.4.0-9

linux-modules-nvidia-440-5.4.0-9-lowlatency/focal 5.4.0-9.12 amd64
  Linux kernel nvidia modules for version 5.4.0-9

linux-modules-nvidia-440-generic/focal 5.4.0-14.17 amd64
  Extra drivers for nvidia-440 for the generic flavour

linux-modules-nvidia-440-lowlatency/focal 5.4.0-14.17 amd64
  Extra drivers for nvidia-440 for the lowlatency flavour

linux-modules-nvidia-440-oem-20.04/focal 5.4.0-1002.4 amd64
  Extra drivers for nvidia-440 for the oem flavour

xserver-xorg-video-nvidia-418/focal 430.50-0ubuntu3 amd64
  Transitional package for xserver-xorg-video-nvidia-430

xserver-xorg-video-nvidia-430/focal 440.59-0ubuntu2 amd64
  Transitional package for xserver-xorg-video-nvidia-440

xserver-xorg-video-nvidia-435/focal 435.21-0ubuntu6 amd64
  NVIDIA binary Xorg driver

xserver-xorg-video-nvidia-440/focal,now 440.59-0ubuntu2 amd64 [installed]
  NVIDIA binary Xorg driver



#60 Oleg Astro

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Posted 16 February 2020 - 08:25 PM

What is the technical explanation for the notorious, "Coefficient is too large" error?



#61 Dan Finnerty

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Posted 17 February 2020 - 02:45 AM

Ah! Indeed I have not updated to the NVIDIA driver. I went back through my notes and that was one of the things I did NOT do to get the install running. For sure, the system crashes if I do a software update. I'm not sure the driver update caused problems. But since I finally got a stable install running, I'm leaving it alone for now. Thanks, brave_ulysses. That was an interesting find. Now I know how to check up on things when I get the NVIDIA driver properly installed.

 

My guess is that it will be several months until various distributions catch up with this motherboard. As the PI benchmark numbers show, it can hum. But it is on the bleeding edge of compatibility.

 

Oh, and I'm running Mint 19.3. With the 5.0.0-32 kernel.


Edited by Dan Finnerty, 17 February 2020 - 02:49 AM.


#62 Dan Finnerty

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Posted 17 February 2020 - 03:03 AM

Oleg, I have to say that reminds me of the punchline to an old bad joke. "I knew it had to be MS headquarters because it was technically accurate and utterly useless."

 

I'm very impressed you found that link. Very very obscure stuff to me.

 

So we know "something went wrong" Yea. It is repeatable at  a billion iterations, occasional at 500 million. Never at lower number of iterations. So it seems there is a statistical component to the frequency of failures. Who knows. I may never get to the bottom of this one. It will continue to be a mystery. I'll repeat this test with new o/s versions or distributions. It would be interesting to see if it is hardware or software related. Now that I think of it, I should try booting with memory at its lower default speed, not the full DDR4-3600.



#63 Tony Finnerty

Tony Finnerty

    Vostok 1

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  • Loc: Nevada City, California

Posted 17 February 2020 - 10:52 AM

Hey Bro.  Here is the link Juan Conejero recommended when I had a problem with Pixinsight when using the Fedora/Linux default video driver and my nVidia card:

 

https://www.if-not-t...a-nvidia-guide/

 

It works.  Sometimes a Fedora update is more extensive and nukes the nVidia driver so it must be re-installed.



#64 Oleg Astro

Oleg Astro

    Astronomy Linux

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  • Vendors
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Posted 17 February 2020 - 02:39 PM

Dan,

run y-cruncher with Select a Benchmark Type: 0

 

IMHO, y-cruncher source code do not dedicated for CPU with 64 threads :)

Attached Thumbnails

  • Screenshot from 2020-02-17 19-34-22.png


#65 Dan Finnerty

Dan Finnerty

    Viking 1

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  • Posts: 901
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  • Loc: Pasadena, CA

Posted 17 February 2020 - 09:57 PM

Oh fudge. what did I do? I was playing with windows, rebooted to linux and now it won't let me log back in. I put in my password, it tries to load the system and comes back to the login screen instead of starting the system. Its not a bad password. If I type a bad password, I get a warning message. It accepts the password but fails to complete the login.

 

Does anyone know of a way to resolve this problem or am I hozed?



#66 brave_ulysses

brave_ulysses

    Apollo

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  • Joined: 19 Apr 2009
  • Loc: far outside the wire

Posted 18 February 2020 - 07:52 AM

can you login to a terminal?

 

ctrl-alt-f1 (could be f2/f3)

 

should bring a text window and login prompt

 

you should be able to check (as root) /var/log/auth.log for some hints. there are login greeter logs, but not sure of the file names

 

if you are using gdm3, you could install lightdm

 

some things to try

https://askubuntu.co...in-ubuntu-18-04

 

good luck!




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