HP ZBook Studio G7 Ubuntu 20.10

Intel Core i9-10885H testing with a HP 8736 (S91 Ver. 01.04.01 BIOS) and NVIDIA Quadro RTX 5000 with Max-Q Design 16GB on Ubuntu 20.10 via the Phoronix Test Suite.

Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 2102220-HA-HPZBOOKST80
Jump To Table - Results

Statistics

Remove Outliers Before Calculating Averages

Graph Settings

Prefer Vertical Bar Graphs
No Box Plots
On Line Graphs With Missing Data, Connect The Line Gaps

Multi-Way Comparison

Condense Multi-Option Tests Into Single Result Graphs

Table

Show Detailed System Result Table

Run Management

Result
Identifier
View Logs
Performance Per
Dollar
Date
Run
  Test
  Duration
Ubuntu 20.10
February 21 2021
  14 Hours, 25 Minutes
Only show results matching title/arguments (delimit multiple options with a comma):
Do not show results matching title/arguments (delimit multiple options with a comma):


HP ZBook Studio G7 Ubuntu 20.10 Intel Core i9-10885H testing with a HP 8736 (S91 Ver. 01.04.01 BIOS) and NVIDIA Quadro RTX 5000 with Max-Q Design 16GB on Ubuntu 20.10 via the Phoronix Test Suite. ,,"Ubuntu 20.10" Processor,,Intel Core i9-10885H @ 5.30GHz (8 Cores / 16 Threads) Motherboard,,HP 8736 (S91 Ver. 01.04.01 BIOS) Chipset,,Intel Comet Lake PCH Memory,,32GB Disk,,2048GB Kioxia KXG50PNV2T04 Graphics,,NVIDIA Quadro RTX 5000 with Max-Q Design 16GB Audio,,Intel Comet Lake PCH cAVS Network,,Intel Wi-Fi 6 AX201 OS,,Ubuntu 20.10 Kernel,,5.8.0-43-generic (x86_64) Desktop,,GNOME Shell 3.38.2 Display Server,,X Server 1.20.9 Display Driver,,NVIDIA 460.32.03 OpenGL,,4.6.0 OpenCL,,OpenCL 1.2 CUDA 11.2.109 Vulkan,,1.2.155 Compiler,,GCC 10.2.0 File-System,,ext4 Screen Resolution,,1920x1080 ,,"Ubuntu 20.10" "Selenium - Benchmark: ARES-6 - Browser: Firefox (ms)",LIB,44.17 "Selenium - Benchmark: Kraken - Browser: Firefox (ms)",LIB,1028.5 "IOR - Block Size: 32MB - Disk Target: Default Test Directory (MB/s)",HIB,676.94 "IOR - Block Size: 16MB - Disk Target: Default Test Directory (MB/s)",HIB,656.48 "IOR - Block Size: 8MB - Disk Target: Default Test Directory (MB/s)",HIB,633.67 "IOR - Block Size: 4MB - Disk Target: Default Test Directory (MB/s)",HIB,610.14 "IOR - Block Size: 2MB - Disk Target: Default Test Directory (MB/s)",HIB,587.57 "Selenium - Benchmark: Octane - Browser: Firefox (Geometric Mean)",HIB,22995 "Selenium - Benchmark: Jetstream - Browser: Firefox (Score)",HIB,187.39 "Selenium - Benchmark: CanvasMark - Browser: Firefox (Score)",HIB,12640 "Selenium - Benchmark: MotionMark - Browser: Firefox (Score)",HIB,189.28 "Selenium - Benchmark: StyleBench - Browser: Firefox (Runs / Minute)",HIB,102 "Selenium - Benchmark: Jetstream 2 - Browser: Firefox (Score)",HIB,89.293 "ET: Legacy - Renderer: Renderer2 - Resolution: 1920 x 1080 (FPS)",HIB,265.1 "DDraceNetwork - Resolution: 1920 x 1080 - Mode: Fullscreen - Renderer: OpenGL 3.3 - Zoom: Default - Demo: Multeasymap (FPS)",HIB,467.48 "DDraceNetwork - Resolution: 1920 x 1080 - Mode: Fullscreen - Renderer: OpenGL 3.3 - Zoom: Default - Demo: RaiNyMore2 (FPS)",HIB,1406.25 "Selenium - Benchmark: Maze Solver - Browser: Firefox (sec)",LIB,5.6 "Selenium - Benchmark: Speedometer - Browser: Firefox (Runs/min)",HIB,112 "Selenium - Benchmark: PSPDFKit WASM - Browser: Firefox (Score)",LIB,3019 "Selenium - Benchmark: WASM imageConvolute - Browser: Firefox (ms)",LIB,28.3 "Selenium - Benchmark: WASM collisionDetection - Browser: Firefox (ms)",LIB,445.9 "toyBrot Fractal Generator - Implementation: TBB (ms)",LIB,49214 "toyBrot Fractal Generator - Implementation: OpenMP (ms)",LIB,50117 "toyBrot Fractal Generator - Implementation: C++ Tasks (ms)",LIB,50043 "toyBrot Fractal Generator - Implementation: C++ Threads (ms)",LIB,49841 "Compile Bench - Test: Compile (MB/s)",HIB,2231.48 "Compile Bench - Test: Initial Create (MB/s)",HIB,614.17 "Compile Bench - Test: Read Compiled Tree (MB/s)",HIB,3801.80 "ctx_clock - Context Switch Time (Clocks)",LIB,94 "Stress-NG - Test: MMAP (Bogo Ops/s)",HIB,137.34 "Stress-NG - Test: NUMA (Bogo Ops/s)",HIB,134.95 "Stress-NG - Test: MEMFD (Bogo Ops/s)",HIB,583.28 "Stress-NG - Test: Atomic (Bogo Ops/s)",HIB,184214.72 "Stress-NG - Test: Crypto (Bogo Ops/s)",HIB,1107.44 "Stress-NG - Test: Malloc (Bogo Ops/s)",HIB,48889348.32 "yquake2 - Renderer: OpenGL 3.x - Resolution: 1920 x 1080 (FPS)",HIB,984.4 "Stress-NG - Test: RdRand (Bogo Ops/s)",HIB,155860.54 "Stress-NG - Test: Forking (Bogo Ops/s)",HIB,51253.74 "Stress-NG - Test: SENDFILE (Bogo Ops/s)",HIB,83677.08 "Stress-NG - Test: CPU Cache (Bogo Ops/s)",HIB,15.60 "Stress-NG - Test: CPU Stress (Bogo Ops/s)",HIB,3231.23 "Stress-NG - Test: Semaphores (Bogo Ops/s)",HIB,1108621.03 "Stress-NG - Test: Matrix Math (Bogo Ops/s)",HIB,25796.81 "Stress-NG - Test: Vector Math (Bogo Ops/s)",HIB,41764.42 "Stress-NG - Test: Memory Copying (Bogo Ops/s)",HIB,1381.72 "Stress-NG - Test: Socket Activity (Bogo Ops/s)",HIB,4951.25 "Stress-NG - Test: Context Switching (Bogo Ops/s)",HIB,1787104.10 "Stress-NG - Test: Glibc C String Functions (Bogo Ops/s)",HIB,697515.20 "Stress-NG - Test: Glibc Qsort Data Sorting (Bogo Ops/s)",HIB,89.36 "Stress-NG - Test: System V Message Passing (Bogo Ops/s)",HIB,7697509.98 "Cryptsetup - PBKDF2-sha512 (Iterations/sec)",HIB,1912323 "Cryptsetup - PBKDF2-whirlpool (Iterations/sec)",HIB,800847 "Cryptsetup - AES-XTS 256b Encryption (MiB/s)",HIB,4060.8 "Cryptsetup - AES-XTS 256b Decryption (MiB/s)",HIB,4041.6 "Cryptsetup - Serpent-XTS 256b Encryption (MiB/s)",HIB,876.9 "Cryptsetup - Serpent-XTS 256b Decryption (MiB/s)",HIB,861.7 "Cryptsetup - Twofish-XTS 256b Encryption (MiB/s)",HIB,478.0 "Cryptsetup - Twofish-XTS 256b Decryption (MiB/s)",HIB,479.5 "Cryptsetup - AES-XTS 512b Encryption (MiB/s)",HIB,3344.6 "Cryptsetup - AES-XTS 512b Decryption (MiB/s)",HIB,3358.2 "Cryptsetup - Serpent-XTS 512b Encryption (MiB/s)",HIB,878.5 "Cryptsetup - Serpent-XTS 512b Decryption (MiB/s)",HIB,862.3 "Cryptsetup - Twofish-XTS 512b Encryption (MiB/s)",HIB,477.9 "Cryptsetup - Twofish-XTS 512b Decryption (MiB/s)",HIB,479.8 "lzbench - Test: XZ 0 - Process: Compression (MB/s)",HIB,49 "lzbench - Test: XZ 0 - Process: Decompression (MB/s)",HIB,134 "lzbench - Test: Zstd 1 - Process: Compression (MB/s)",HIB,594 "lzbench - Test: Zstd 1 - Process: Decompression (MB/s)",HIB,1982 "lzbench - Test: Zstd 8 - Process: Compression (MB/s)",HIB,104 "lzbench - Test: Zstd 8 - Process: Decompression (MB/s)",HIB,2164 "lzbench - Test: Crush 0 - Process: Compression (MB/s)",HIB,124 "lzbench - Test: Crush 0 - Process: Decompression (MB/s)",HIB,603 "lzbench - Test: Brotli 0 - Process: Compression (MB/s)",HIB,547 "lzbench - Test: Brotli 0 - Process: Decompression (MB/s)",HIB,730 "lzbench - Test: Brotli 2 - Process: Compression (MB/s)",HIB,221 "lzbench - Test: Brotli 2 - Process: Decompression (MB/s)",HIB,856 "lzbench - Test: Libdeflate 1 - Process: Compression (MB/s)",HIB,283 "glibc bench - Benchmark: cos (nanoseconds)",LIB,36.4651 "glibc bench - Benchmark: exp (nanoseconds)",LIB,4.45224 "glibc bench - Benchmark: ffs (nanoseconds)",LIB,1.56930 "glibc bench - Benchmark: sin (nanoseconds)",LIB,36.4881 "glibc bench - Benchmark: log2 (nanoseconds)",LIB,6.34300 "glibc bench - Benchmark: modf (nanoseconds)",LIB,1.58434 "glibc bench - Benchmark: sinh (nanoseconds)",LIB,7.15386 "glibc bench - Benchmark: sqrt (nanoseconds)",LIB,1.56837 "glibc bench - Benchmark: tanh (nanoseconds)",LIB,10.8465 "glibc bench - Benchmark: asinh (nanoseconds)",LIB,8.12172 "glibc bench - Benchmark: atanh (nanoseconds)",LIB,9.77185 "glibc bench - Benchmark: ffsll (nanoseconds)",LIB,1.36765 "glibc bench - Benchmark: sincos (nanoseconds)",LIB,12.8816 "glibc bench - Benchmark: pthread_once (nanoseconds)",LIB,1.37251 "Darktable - Test: Boat - Acceleration: CPU-only (sec)",LIB,15.732 "Darktable - Test: Masskrug - Acceleration: CPU-only (sec)",LIB,6.289 "Darktable - Test: Server Rack - Acceleration: CPU-only (sec)",LIB,0.192 "Darktable - Test: Server Room - Acceleration: CPU-only (sec)",LIB,4.227 "Ngspice - Circuit: C2670 (sec)",LIB,110.155 "Ngspice - Circuit: C7552 (sec)",LIB,90.355 "G'MIC - Test: 2D Function Plotting, 1000 Times (sec)",LIB,116.589 "G'MIC - Test: Plotting Isosurface Of A 3D Volume, 1000 Times (sec)",LIB,16.897 "G'MIC - Test: 3D Elevated Function In Random Colors, 100 Times (sec)",LIB,58.623 "Hugin - Panorama Photo Assistant + Stitching Time (sec)",LIB,53.019 "JPEG XL - Input: PNG - Encode Speed: 5 (MP/s)",HIB,64.35 "JPEG XL - Input: PNG - Encode Speed: 7 (MP/s)",HIB,9.50 "JPEG XL - Input: JPEG - Encode Speed: 5 (MP/s)",HIB,68.13 "RawTherapee - Total Benchmark Time (sec)",LIB,79.977 "WebP Image Encode - Encode Settings: Default (Encode Time - sec)",LIB,1.326 "Zstd Compression - Compressing ubuntu-16.04.3-server-i386.img, Compression Level 19 (sec)",LIB,135.970 "JPEG XL - Input: JPEG - Encode Speed: 7 (MP/s)",HIB,67.86 "WebP Image Encode - Encode Settings: Quality 100 (Encode Time - sec)",LIB,2.083 "WebP Image Encode - Encode Settings: Quality 100, Highest Compression (Encode Time - sec)",LIB,6.306 "GEGL - Operation: Crop (sec)",LIB,8.347 "GEGL - Operation: Scale (sec)",LIB,6.761 "GEGL - Operation: Cartoon (sec)",LIB,82.487 "GEGL - Operation: Reflect (sec)",LIB,25.930 "GEGL - Operation: Antialias (sec)",LIB,32.492 "GEGL - Operation: Tile Glass (sec)",LIB,25.576 "GEGL - Operation: Wavelet Blur (sec)",LIB,51.651 "GEGL - Operation: Color Enhance (sec)",LIB,48.648 "GEGL - Operation: Rotate 90 Degrees (sec)",LIB,35.538 "librsvg - Operation: SVG Files To PNG (sec)",LIB,17.444 "OCRMyPDF - Processing 60 Page PDF Document (sec)",LIB,29.325 "GIMP - Test: resize (sec)",LIB,8.089 "GIMP - Test: rotate (sec)",LIB,10.622 "GIMP - Test: auto-levels (sec)",LIB,10.835 "GIMP - Test: unsharp-mask (sec)",LIB,14.211 "eSpeak-NG Speech Engine - Text-To-Speech Synthesis (sec)",LIB,28.225 "Google SynthMark - Test: VoiceMark_100 (Voices)",HIB,740.402 "GLmark2 - Resolution: 1920 x 1080 (Score)",HIB,7642 "Tesseract - Resolution: 1920 x 1080 (FPS)",HIB,459.2711 "Xonotic - Resolution: 1920 x 1080 - Effects Quality: Low (FPS)",HIB,508.1024566 "Xonotic - Resolution: 1920 x 1080 - Effects Quality: High (FPS)",HIB,434.7104494 "MPV - Video Input: Big Buck Bunny Sunflower 1080p - Decode: Software Only (FPS)",HIB,1723.153 "MPV - Video Input: Big Buck Bunny Sunflower 4K - Decode: Software Only (FPS)",HIB,479.764 "Xonotic - Resolution: 1920 x 1080 - Effects Quality: Ultra (FPS)",HIB,388.7158361 "Xonotic - Resolution: 1920 x 1080 - Effects Quality: Ultimate (FPS)",HIB,311.0931947 "FS-Mark - Test: 1000 Files, 1MB Size (Files/s)",HIB,121.5 "FS-Mark - Test: 5000 Files, 1MB Size, 4 Threads (Files/s)",HIB,275.7 "FS-Mark - Test: 4000 Files, 32 Sub Dirs, 1MB Size (Files/s)",HIB,121.2 "FS-Mark - Test: 1000 Files, 1MB Size, No Sync/FSync (Files/s)",HIB,3363.3 "QuantLib - (MFLOPS)",HIB,2736.4 "Himeno Benchmark - Poisson Pressure Solver (MFLOPS)",HIB,4034.843575 "LeelaChessZero - Backend: BLAS (Nodes/s)",HIB,308 "LeelaChessZero - Backend: Eigen (Nodes/s)",HIB,675 "LeelaChessZero - Backend: OpenCL (Nodes/s)",HIB,13384 "LeelaChessZero - Backend: Random (Nodes/s)",HIB,242313 "Dolfyn - Computational Fluid Dynamics (sec)",LIB,17.311 "DeepSpeech - Acceleration: CPU (sec)",LIB,81.39230 "RNNoise - (sec)",LIB,21.527 "TensorFlow Lite - Model: SqueezeNet (us)",LIB,354260 "TensorFlow Lite - Model: Inception V4 (us)",LIB,5155087 "TensorFlow Lite - Model: NASNet Mobile (us)",LIB,304231 "TensorFlow Lite - Model: Mobilenet Float (us)",LIB,237932 "TensorFlow Lite - Model: Mobilenet Quant (us)",LIB,236041 "TensorFlow Lite - Model: Inception ResNet V2 (us)",LIB,4676000 "GROMACS - Input: water_GMX50_bare (Ns/Day)",HIB,0.613 "LAMMPS Molecular Dynamics Simulator - Model: Rhodopsin Protein (ns/day)",HIB,6.432 "NAMD - ATPase Simulation - 327,506 Atoms (days/ns)",LIB,2.01788 "ASKAP - Test: tConvolve MT - Gridding (Million Grid Points/sec)",HIB,1056.22 "ASKAP - Test: tConvolve MT - Degridding (Million Grid Points/sec)",HIB,1702.45 "ASKAP - Test: tConvolve MPI - Degridding (Mpix/sec)",HIB,1733.91 "ASKAP - Test: tConvolve MPI - Gridding (Mpix/sec)",HIB,1785.06 "ASKAP - Test: tConvolve OpenMP - Gridding (Million Grid Points/sec)",HIB,1181.86 "ASKAP - Test: tConvolve OpenMP - Degridding (Million Grid Points/sec)",HIB,2048.12 "ASKAP - Test: Hogbom Clean OpenMP (Iterations/sec)",HIB,177.221 "OSBench - Test: Create Files (us/Event)",LIB,11.191055 "OSBench - Test: Create Threads (us/Event)",LIB,9.123484 "OSBench - Test: Launch Programs (us/Event)",LIB,28.452396 "OSBench - Test: Create Processes (us/Event)",LIB,17.895698 "OSBench - Test: Memory Allocations (Ns/Event)",LIB,60.628017 "WireGuard + Linux Networking Stack Stress Test - (sec)",LIB,167.381 "Timed GDB GNU Debugger Compilation - Time To Compile (sec)",LIB,95.062 "Stockfish - Total Time (Nodes/s)",HIB,16045533 "asmFish - 1024 Hash Memory, 26 Depth (Nodes/s)",HIB,24970041 "Timed Linux Kernel Compilation - Time To Compile (sec)",LIB,101.667 "SVT-VP9 - Tuning: VMAF Optimized - Input: Bosphorus 1080p (FPS)",HIB,150.79 "SVT-VP9 - Tuning: PSNR/SSIM Optimized - Input: Bosphorus 1080p (FPS)",HIB,157.67 "SVT-VP9 - Tuning: Visual Quality Optimized - Input: Bosphorus 1080p (FPS)",HIB,123.18 "dav1d - Video Input: Chimera 1080p (FPS)",HIB,605.76 "dav1d - Video Input: Summer Nature 4K (FPS)",HIB,150.02 "dav1d - Video Input: Summer Nature 1080p (FPS)",HIB,543.25 "dav1d - Video Input: Chimera 1080p 10-bit (FPS)",HIB,107.91 "SVT-AV1 - Encoder Mode: Enc Mode 0 - Input: 1080p (FPS)",HIB,0.125 "SVT-AV1 - Encoder Mode: Enc Mode 4 - Input: 1080p (FPS)",HIB,2.995 "SVT-AV1 - Encoder Mode: Enc Mode 8 - Input: 1080p (FPS)",HIB,26.118 "SVT-HEVC - 1080p 8-bit YUV To HEVC Video Encode (FPS)",HIB,43.54 "Blender - Blend File: Barbershop - Compute: NVIDIA OptiX (sec)",LIB,1155.64 "libavif avifenc - Encoder Speed: 0 (sec)",LIB,101.971 "libavif avifenc - Encoder Speed: 2 (sec)",LIB,60.230 "libavif avifenc - Encoder Speed: 8 (sec)",LIB,5.251 "libavif avifenc - Encoder Speed: 10 (sec)",LIB,4.856 "Timed Godot Game Engine Compilation - Time To Compile (sec)",LIB,175.173 "FinanceBench - Benchmark: Repo OpenMP (ms)",LIB,56918.372396 "FinanceBench - Benchmark: Bonds OpenMP (ms)",LIB,80697.953125 "FinanceBench - Benchmark: Monte-Carlo OpenCL (ms)",LIB,1648.956014 "FinanceBench - Benchmark: Black-Scholes OpenCL (ms)",LIB,28.235 "VkFFT - (Benchmark Score)",HIB,23759 "VkResample - Upscale: 2x - Precision: Single (ms)",LIB,446.104 "LibreOffice - Test: 20 Documents To PDF (sec)",LIB,6.591 "PyPerformance - Benchmark: go (Milliseconds)",LIB,206 "PyPerformance - Benchmark: 2to3 (Milliseconds)",LIB,264 "PyPerformance - Benchmark: chaos (Milliseconds)",LIB,87.2 "PyPerformance - Benchmark: float (Milliseconds)",LIB,89.8 "PyPerformance - Benchmark: nbody (Milliseconds)",LIB,96.9 "PyPerformance - Benchmark: pathlib (Milliseconds)",LIB,14.6 "PyPerformance - Benchmark: raytrace (Milliseconds)",LIB,382 "PyPerformance - Benchmark: json_loads (Milliseconds)",LIB,20.5 "PyPerformance - Benchmark: crypto_pyaes (Milliseconds)",LIB,88.3 "PyPerformance - Benchmark: regex_compile (Milliseconds)",LIB,139 "PyPerformance - Benchmark: python_startup (Milliseconds)",LIB,6.69 "PyPerformance - Benchmark: django_template (Milliseconds)",LIB,39.4 "PyPerformance - Benchmark: pickle_pure_python (Milliseconds)",LIB,344 "SQLite Speedtest - Timed Time - Size 1,000 (sec)",LIB,49.685 "Polyhedron Fortran Benchmarks - Benchmark: ac (sec)",LIB,4.42 "Polyhedron Fortran Benchmarks - Benchmark: air (sec)",LIB,1.7 "Polyhedron Fortran Benchmarks - Benchmark: mdbx (sec)",LIB,4.11 "Polyhedron Fortran Benchmarks - Benchmark: doduc (sec)",LIB,6.49 "Polyhedron Fortran Benchmarks - Benchmark: linpk (sec)",LIB,2.61 "Polyhedron Fortran Benchmarks - Benchmark: tfft2 (sec)",LIB,20.7 "Polyhedron Fortran Benchmarks - Benchmark: aermod (sec)",LIB,5.06 "Polyhedron Fortran Benchmarks - Benchmark: rnflow (sec)",LIB,13.33 "Polyhedron Fortran Benchmarks - Benchmark: induct2 (sec)",LIB,14.91 "Polyhedron Fortran Benchmarks - Benchmark: protein (sec)",LIB,12.2 "Polyhedron Fortran Benchmarks - Benchmark: capacita (sec)",LIB,9.43 "Polyhedron Fortran Benchmarks - Benchmark: channel2 (sec)",LIB,49 "Polyhedron Fortran Benchmarks - Benchmark: fatigue2 (sec)",LIB,41.02 "Polyhedron Fortran Benchmarks - Benchmark: gas_dyn2 (sec)",LIB,44.87 "Polyhedron Fortran Benchmarks - Benchmark: test_fpu2 (sec)",LIB,30.13 "Polyhedron Fortran Benchmarks - Benchmark: mp_prop_design (sec)",LIB,51.28 "PyBench - Total For Average Test Times (Milliseconds)",LIB,879 "GeeXLab Vulkan Ray-Tracing Demo - Resolution: 1920 x 1080 (FPS)",HIB,107.6 "ParaView - Test: Many Spheres - Resolution: 1920 x 1080 (Frames / Sec)",HIB,64.91 "ParaView - Test: Many Spheres - Resolution: 1920 x 1080 (MiPolys / Sec)",HIB,6507.518 "ParaView - Test: Wavelet Volume - Resolution: 1920 x 1080 (Frames / Sec)",HIB,404.65 "ParaView - Test: Wavelet Volume - Resolution: 1920 x 1080 (MiVoxels / Sec)",HIB,6474.321 "ParaView - Test: Wavelet Contour - Resolution: 1920 x 1080 (Frames / Sec)",HIB,276.54 "ParaView - Test: Wavelet Contour - Resolution: 1920 x 1080 (MiPolys / Sec)",HIB,2881.923 "DDraceNetwork - Resolution: 1920 x 1080 - Mode: Fullscreen - Renderer: OpenGL 3.3 - Zoom: Default - Demo: RaiNyMore2 - Total Frame Time (Milliseconds)",LIB,0.73 "DDraceNetwork - Resolution: 1920 x 1080 - Mode: Fullscreen - Renderer: OpenGL 3.3 - Zoom: Default - Demo: Multeasymap - Total Frame Time (Milliseconds)",LIB,2.12