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Using exact Hessian for multinomial logistic

feature-request

Status: Open.

#12278 In dmlc/xgboost;

· david-cortes opened on Jun 30, 2026

Structure of multi-output trees

Status: Open.

#12277 In dmlc/xgboost;

· david-cortes opened on Jun 30, 2026

R reverse dependencies failures.

Status: Open.

#12260 In dmlc/xgboost;

· trivialfis opened on Jun 20, 2026

Python wheels missing license file

Status: Open.

#12256 In dmlc/xgboost;

· david-cortes opened on Jun 18, 2026

Sum of hessians calculated incorrectly under hist method

Status: Open.

#12248 In dmlc/xgboost;

· david-cortes opened on Jun 15, 2026

References / explanations for contribution predictions

Status: Open.

#12241 In dmlc/xgboost;

· david-cortes opened on Jun 9, 2026

Generic Message of Error: * You are running 32-bit Python on a 64-bit OS

Status: Open.

#12227 In dmlc/xgboost;

· jayeshmanani opened on Jun 3, 2026

Support pixi as development environment.

Status: Open.

#12221 In dmlc/xgboost;

· trivialfis opened on May 23, 2026

GPU training crashes with CUDA_ERROR_NOT_SUPPORTED on NVIDIA A40-48C vGPU profile — CheckVmAlloc's driver-version heuristic doesn't detect VMM-blocked vGPU profiles

Status: Open.

#12217 In dmlc/xgboost;

· maged-mostafa-ds opened on May 18, 2026

predict.xgboost silently ignores predcontrib = T

Status: Open.

#12211 In dmlc/xgboost;

· Kodiologist opened on May 13, 2026

XGBoost silent process kill with sparse polars Categorical codes

Status: Open.

#12177 In dmlc/xgboost;

· fingoldo opened on Apr 21, 2026

[CI] Slim down test suites in linux-amd64-cpu and linux-amd64-mgpu

Status: Open.

#12154 In dmlc/xgboost;

· hcho3 opened on Apr 10, 2026