I have to correct my previous report. When running molecular dynamics, the capability of the GPU is 5GT/, but the actual speed link is at 2.5GT/s, i.e., below PCIe 2.o
#lspci -vvvv 02:00.0 VGA compatible controller: NVIDIA Corporation GK104 [GeForce GTX 680] (rev a1) (prog-if 00 [VGA controller]) Subsystem: NVIDIA Corporation Device 0969 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 16 Region 0: Memory at fa000000 (32-bit, non-prefetchable) [size=16M] Region 1: Memory at c0000000 (64-bit, prefetchable) [size=128M] Region 3: Memory at c8000000 (64-bit, prefetchable) [size=32M] Region 5: I/O ports at e000 [size=128] [virtual] Expansion ROM at fb000000 [disabled] [size=512K] 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: 0000000000000000 Data: 0000 Capabilities: [78] Express (v2) Endpoint, MSI 00 DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s unlimited, L1 <64us ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset- DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+ MaxPayload 256 bytes, MaxReadReq 512 bytes DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend- LnkCap: Port #0, Speed 5GT/s, Width x16, ASPM L0s L1, Latency L0 <512ns, L1 <4us ClockPM+ Surprise- LLActRep- BwNot- LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+ ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt- LnkSta: Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- DevCap2: Completion Timeout: Range AB, TimeoutDis+, LTR-, OBFF Not Supported DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled LnkCtl2: Target Link Speed: 5GT/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- francesco pietra ---------- Forwarded message ---------- From: Francesco Pietra <chiendar...@gmail.com> Date: Tue, Nov 12, 2013 at 3:54 PM Subject: upgrade to jessie from wheezy with cuda problems To: amd64 Debian <debian-amd64@lists.debian.org> Hello: I decided to try jessie to get PCIe 3.0 with a recent nvidia driver, thus upgrading from wheezy. wheezy was uname -r 3.2.0-4-amd64 nvidia-smi 304.88 nvcc --version 4.2 (the latter is also the version at which the molecular dynamics code was compiled, and used without calling the X-server) ******************** Following aptitude update aptitude-upgrade a number of dependecies related to gnome were not met (evolution-common lbfolks25 gnome-panel gnome-shell gnome-theme-extras gnome-theme-standard libreoffice-evolution). This notwithstanding, I decided to upgrade. After rebooting to get linux matching with nvidia: nvcc --version 5.0 uname -r 3.10-3-amd64 nvidia-smi the nvidia kernel module has version 304.108 but the nvidia driver component has version 319.60. Driver 319.6 is just what I wanted. Now, how best fix the problems? Install linux image 3.2? In the past I tried dist-upgrade, getting into devastating problems. thanks francesco pietra PS I was advised that debian is getting bounces from my address above. If so, please try my institutional address < francesco.pie...@accademialucchese.it>