Gurobi 13.0.0 PDHG : Not a GPU build - running on CPU instead
回答済みHello,
I’m trying to run a MIP on AWS on an NVIDIA A100 GPU. I installed the Linux GPU build and, in my Julia script, I set Method = 6 and PDHGGPU = 1.
The optimization completes successfully, but the log reports: “Not a GPU build – running on CPU instead,” and it appears to run entirely on the CPU.
In the Gurobi documentation for supported GPU platforms, it states that the NVIDIA driver version should be < 580. On this instance, nvidia-smi shows driver version 580.95.05.
Could the driver version be the reason Gurobi is not enabling the GPU build? If so, is downgrading the driver to a supported version (e.g., 565/570/550, depending on availability) the recommended fix?
Thank you,
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Gurobi Staff
Hi Zejun,
If the GPU build cannot find a GPU that it can use then it will give a warning to this effect.
The error you're seeing indicates that the Gurobi version you're running is not a GPU build. It could be that Julia is downloading it's own version of Gurobi, and not using the one you have downloaded.
Can you please review this section of the Gurobi.jl readme and see if it helps resolve the issue?
https://github.com/jump-dev/Gurobi.jl?tab=readme-ov-file#custom-binary-installation- Riley
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Hello again,
Thank you for the response.
After updating the setup, Gurobi now correctly detects the A100 GPU and attempts to run PDHG on the GPU. However, I’m now encountering a new issue related to the CUDA/NVIDIA driver compatibility, and the solve falls back to CPU.
I am sharing below the gurobi log:
Gurobi Optimizer version 13.0.0 build v13.0.0rc1 (linux64gpu - "Ubuntu 24.04.3 LTS")CPU model: Intel(R) Xeon(R) Platinum 8275CL CPU @ 3.00GHz, instruction set [SSE2|AVX|AVX2|AVX512]
Thread count: 6 physical cores, 12 logical processors, using up to 12 threadsGPU model: NVIDIA A100-SXM4-40GB, CUDA compute version 8.0, NVIDIA driver compatible with CUDA version 13
Non-default parameters:
Method 6
PDHGGPU 1
Optimize a model with 40143 rows, 36864 columns and 88241 nonzeros (Min)
Model fingerprint: 0x1f5dce0f
Model has 32904 linear objective coefficients
Coefficient statistics:
Matrix range [1e+00, 1e+03]
Objective range [5e+00, 2e+04]
Bounds range [1e+00, 1e+00]
RHS range [1e+00, 8e+03]
Presolve removed 39255 rows and 4580 columns
Presolve time: 0.05s
Presolved: 888 rows, 32477 columns, 34144 nonzerosNo CUDA compatible GPU driver (compatible with 13, requires 12) - running on CPU instead
Start PDHG using 1 threads
Objective Residual
Iter Primal Dual Primal Dual Compl Time
0 4.03776799e+06 -2.94983814e+08 3.49e+03 0.00e+00 9.07e+03 0s
17809 -2.85856546e+08 -2.85856557e+08 1.84e-02 9.50e-04 4.31e-05 3sPDHG solved model in 17809 iterations and 2.81 seconds (8.69 work units)
Optimal objective -2.85856546e+08
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Hi Zejun,
Can you paste the output of running
nvidia-smi -qfrom your terminal? I expect this will help us understand the situation better.- Riley
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==============NVSMI LOG==============
Timestamp : Wed Jan 14 09:20:43 2026
Driver Version : 580.95.05
CUDA Version : 13.0Attached GPUs : 1
GPU 00000000:20:1C.0
Product Name : NVIDIA A100-SXM4-40GB
Product Brand : NVIDIA
Product Architecture : Ampere
Display Mode : Requested functionality has been deprecated
Display Attached : Yes
Display Active : Disabled
Persistence Mode : Disabled
Addressing Mode : HMM
MIG Mode
Current : Disabled
Pending : Disabled
Accounting Mode : Disabled
Accounting Mode Buffer Size : 4000
Driver Model
Current : N/A
Pending : N/A
Serial Number : 1321622061006
GPU UUID : GPU-e8c8e5d4-220c-7cb9-9e69-3ce572fca60a
GPU PDI : 0x2b7f812d95a27658
Minor Number : 2
VBIOS Version : 92.00.45.00.0A
MultiGPU Board : No
Board ID : 0x201c
Board Part Number : 692-2G506-0200-006
GPU Part Number : 20B0-884-A1
FRU Part Number : N/A
Platform Info
Chassis Serial Number : N/A
Slot Number : N/A
Tray Index : N/A
Host ID : N/A
Peer Type : N/A
Module Id : 3
GPU Fabric GUID : N/A
Inforom Version
Image Version : G506.0200.00.04
OEM Object : 2.0
ECC Object : 6.16
Power Management Object : N/A
Inforom BBX Object Flush
Latest Timestamp : N/A
Latest Duration : N/A
GPU Operation Mode
Current : N/A
Pending : N/A
GPU C2C Mode : N/A
GPU Virtualization Mode
Virtualization Mode : Pass-Through
Host VGPU Mode : N/A
vGPU Heterogeneous Mode : N/A
GPU Recovery Action : None
GSP Firmware Version : 580.95.05
IBMNPU
Relaxed Ordering Mode : N/A
PCI
Bus : 0x20
Device : 0x1C
Domain : 0x0000
Base Classcode : 0x3
Sub Classcode : 0x2
Device Id : 0x20B010DE
Bus Id : 00000000:20:1C.0
Sub System Id : 0x134F10DE
GPU Link Info
PCIe Generation
Max : 4
Current : 4
Device Current : 4
Device Max : 4
Host Max : N/A
Link Width
Max : 16x
Current : 16x
Bridge Chip
Type : N/A
Firmware : N/A
Replays Since Reset : 0
Replay Number Rollovers : 0
Tx Throughput : 341 KB/s
Rx Throughput : 244 KB/s
Atomic Caps Outbound : N/A
Atomic Caps Inbound : N/A
Fan Speed : N/A
Performance State : P0
Clocks Event Reasons
Idle : Active
Applications Clocks Setting : Not Active
SW Power Cap : Not Active
HW Slowdown : Not Active
HW Thermal Slowdown : Not Active
HW Power Brake Slowdown : Not Active
Sync Boost : Not Active
SW Thermal Slowdown : Not Active
Display Clock Setting : Not Active
Clocks Event Reasons Counters
SW Power Capping : 0 us
Sync Boost : 0 us
SW Thermal Slowdown : 0 us
HW Thermal Slowdown : 0 us
HW Power Braking : 0 us
Sparse Operation Mode : N/A
FB Memory Usage
Total : 40960 MiB
Reserved : 519 MiB
Used : 0 MiB
Free : 40442 MiB
BAR1 Memory Usage
Total : 65536 MiB
Used : 1 MiB
Free : 65535 MiB
Conf Compute Protected Memory Usage
Total : 0 MiB
Used : 0 MiB
Free : 0 MiB
Compute Mode : Default
Utilization
GPU : 0 %
Memory : 0 %
Encoder : 0 %
Decoder : 0 %
JPEG : 0 %
OFA : 0 %
Encoder Stats
Active Sessions : 0
Average FPS : 0
Average Latency : 0
FBC Stats
Active Sessions : 0
Average FPS : 0
Average Latency : 0
DRAM Encryption Mode
Current : N/A
Pending : N/A
ECC Mode
Current : Enabled
Pending : Enabled
ECC Errors
Volatile
SRAM Correctable : 0
SRAM Uncorrectable Parity : 0
SRAM Uncorrectable SEC-DED : 0
DRAM Correctable : 0
DRAM Uncorrectable : 0
Aggregate
SRAM Correctable : 0
SRAM Uncorrectable Parity : 0
SRAM Uncorrectable SEC-DED : 0
DRAM Correctable : 0
DRAM Uncorrectable : 0
SRAM Threshold Exceeded : No
Aggregate Uncorrectable SRAM Sources
SRAM L2 : 0
SRAM SM : 0
SRAM Microcontroller : 0
SRAM PCIE : 0
SRAM Other : 0
Channel Repair Pending : No
TPC Repair Pending : No
Retired Pages
Single Bit ECC : N/A
Double Bit ECC : N/A
Pending Page Blacklist : N/A
Remapped Rows
Correctable Error : 0
Uncorrectable Error : 0
Pending : No
Remapping Failure Occurred : No
Bank Remap Availability Histogram
Max : 640 bank(s)
High : 0 bank(s)
Partial : 0 bank(s)
Low : 0 bank(s)
None : 0 bank(s)
Temperature
GPU Current Temp : 43 C
GPU T.Limit Temp : N/A
GPU Shutdown Temp : 92 C
GPU Slowdown Temp : 89 C
GPU Max Operating Temp : 85 C
GPU Target Temperature : N/A
Memory Current Temp : 44 C
Memory Max Operating Temp : 95 C
GPU Power Readings
Average Power Draw : N/A
Instantaneous Power Draw : 59.30 W
Current Power Limit : 400.00 W
Requested Power Limit : 400.00 W
Default Power Limit : 400.00 W
Min Power Limit : 100.00 W
Max Power Limit : 400.00 W
GPU Memory Power Readings
Average Power Draw : N/A
Instantaneous Power Draw : N/A
Module Power Readings
Average Power Draw : N/A
Instantaneous Power Draw : N/A
Current Power Limit : N/A
Requested Power Limit : N/A
Default Power Limit : N/A
Min Power Limit : N/A
Max Power Limit : N/A
Power Smoothing : N/A
Workload Power Profiles
Requested Profiles : N/A
Enforced Profiles : N/A
Clocks
Graphics : 210 MHz
SM : 210 MHz
Memory : 1215 MHz
Video : 585 MHz
Applications Clocks
Graphics : 1095 MHz
Memory : 1215 MHz
Default Applications Clocks
Graphics : 1095 MHz
Memory : 1215 MHz
Deferred Clocks
Memory : N/A
Max Clocks
Graphics : 1410 MHz
SM : 1410 MHz
Memory : 1215 MHz
Video : 1290 MHz
Max Customer Boost Clocks
Graphics : 1410 MHz
Clock Policy
Auto Boost : N/A
Auto Boost Default : N/A
Fabric
State : N/A
Status : N/A
CliqueId : N/A
ClusterUUID : N/A
Health
Summary : N/A
Bandwidth : N/A
Route Recovery in progress : N/A
Route Unhealthy : N/A
Access Timeout Recovery : N/A
Incorrect Configuration : N/A
Processes : None
Capabilities
EGM : disabled0 -
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Ok I see the issue. Gurobi 13.0.0 supports CUDA versions 8 - 12 and drivers < 580. See Supported GPUs Platforms.
At some point we will add support for CUDA 13, but I don't currently have a timeline for this.
- Riley
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Hi Zejun,
Just an update, we will support CUDA 13 with the release of v13.0.1 later this month.
- Riley
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