Ubuntu 12.04 LTS ARMv7 LLVM Clang 3.0 vs. GCC 4.6 Compiler

PandaBoard ES Texas Instruments OMAP4460 ARMv7 dual-core ARM Cortex A9 1.2GHz benchmarking of Ubuntu 12.04 LTS hard-float with Linux 3.2 kernel. This ARMv7 compiler testing of the Precise packages for LLVM Clang 3.0 versus GCC 4.6.3 compilers. Same compiler flags used each time with -O3 CFLAGS/CXXFLAGS. Initial look at LLVM Clang C/C++ compiler performance under dual-core ARMv7 platform dual-core. ARM Linux benchmarking for a future article on Phoronix.com.

Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 1204218-SU-ARMCLANG163
Jump To Table - Results

View

Do Not Show Noisy Results
Do Not Show Results With Incomplete Data
Do Not Show Results With Little Change/Spread
List Notable Results

Limit displaying results to tests within:

Chess Test Suite 2 Tests
C/C++ Compiler Tests 7 Tests
CPU Massive 6 Tests
Creator Workloads 4 Tests
Encoding 2 Tests
Multi-Core 6 Tests
Renderers 2 Tests
Server CPU Tests 4 Tests
Single-Threaded 2 Tests
Video Encoding 2 Tests

Statistics

Show Overall Harmonic Mean(s)
Show Overall Geometric Mean
Show Geometric Means Per-Suite/Category
Show Wins / Losses Counts (Pie Chart)
Normalize Results
Remove Outliers Before Calculating Averages

Graph Settings

Force Line Graphs Where Applicable
Convert To Scalar Where Applicable
Disable Color Branding
Prefer Vertical Bar Graphs

Multi-Way Comparison

Condense Multi-Option Tests Into Single Result Graphs

Table

Show Detailed System Result Table

Run Management

Highlight
Result
Hide
Result
Result
Identifier
View Logs
Performance Per
Dollar
Date
Run
  Test
  Duration
ARM GCC 4.6.3
April 20 2012
 
ARM LLVM-Clang 3.0
April 20 2012
 
Invert Hiding All Results Option
 
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):

{ "title": "Ubuntu 12.04 LTS ARMv7 LLVM Clang 3.0 vs. GCC 4.6 Compiler", "last_modified": "2012-04-21 14:38:50", "description": "PandaBoard ES Texas Instruments OMAP4460 ARMv7 dual-core ARM Cortex A9 1.2GHz benchmarking of Ubuntu 12.04 LTS hard-float with Linux 3.2 kernel. This ARMv7 compiler testing of the Precise packages for LLVM Clang 3.0 versus GCC 4.6.3 compilers. Same compiler flags used each time with -O3 CFLAGS\/CXXFLAGS. Initial look at LLVM Clang C\/C++ compiler performance under dual-core ARMv7 platform dual-core. ARM Linux benchmarking for a future article on Phoronix.com.", "systems": { "ARM GCC 4.6.3": { "identifier": "ARM GCC 4.6.3", "hardware": { "Processor": "ARMv7 rev 10 @ 1.20GHz (2 Cores)", "Motherboard": "OMAP4 Panda board", "Memory": "904MB", "Disk": "16GB SD16G", "Graphics": "Texas Instruments OMAP" }, "software": { "OS": "Ubuntu 12.04", "Kernel": "3.2.0-1412-omap4 (armv7l)", "Desktop": "Unity 2D 5.10.0", "Display Server": "X Server 1.11.3", "Display Driver": "fbdev 0.4.2", "Compiler": "GCC 4.6", "File-System": "ext4", "Screen Resolution": "1920x1080" }, "user": "phoronix", "timestamp": "2012-04-20 08:57:28", "client_version": "4.0.0m1" }, "ARM LLVM-Clang 3.0": { "identifier": "ARM LLVM-Clang 3.0", "hardware": { "Processor": "ARMv7 rev 10 @ 1.20GHz (2 Cores)", "Motherboard": "OMAP4 Panda board", "Memory": "904MB", "Disk": "16GB SD16G", "Graphics": "Texas Instruments OMAP" }, "software": { "OS": "Ubuntu 12.04", "Kernel": "3.2.0-1412-omap4 (armv7l)", "Desktop": "Unity 2D 5.10.0", "Display Server": "X Server 1.11.3", "Display Driver": "fbdev 0.4.2", "Compiler": "Clang 4.2.1", "File-System": "ext4", "Screen Resolution": "1920x1080" }, "user": "phoronix", "timestamp": "2012-04-20 21:39:08", "client_version": "4.0.0m1" } }, "results": { "0e662cca5aa9f7133f0775b3347bd0ed3747457e": { "identifier": "pts\/vpxenc-1.0.0", "title": "VP8 libvpx Encoding", "app_version": "0.9.7-p1", "description": "vpxenc", "scale": "Frames Per Second", "proportion": "HIB", "display_format": "BAR_GRAPH", "results": { "ARM GCC 4.6.3": { "value": 1.0100000000000000088817841970012523233890533447265625, "raw_values": [ 1.0100000000000000088817841970012523233890533447265625, 1.0100000000000000088817841970012523233890533447265625, 1.0100000000000000088817841970012523233890533447265625 ], "details": { "compiler-options": { "compiler-type": "CC", "compiler": "gcc", "compiler-options": "-lvpx -lm -lpthread" } } } } }, "a0473c180fdaab0a93ee6502d4783ac48f69853f": { "identifier": "pts\/x264-1.3.1", "title": "x264", "app_version": "2011-12-06", "description": "H.264 Video Encoding", "scale": "Frames Per Second", "proportion": "HIB", "display_format": "BAR_GRAPH", "results": { "ARM GCC 4.6.3": { "value": 4.03000000000000024868995751603506505489349365234375, "raw_values": [ 4.05999999999999960920149533194489777088165283203125, 4.03000000000000024868995751603506505489349365234375, 4 ] } } }, "37aa6a8d13c02f0d837024e43731d081faa73522": { "identifier": "pts\/cachebench-1.0.0", "title": "CacheBench", "arguments": "-r", "description": "Test: Read", "scale": "MB\/s", "proportion": "HIB", "display_format": "BAR_GRAPH", "results": { "ARM GCC 4.6.3": { "value": 1676.589999999999918145476840436458587646484375, "raw_values": [ 1705.965046999999913168721832334995269775390625, 1651.4863230000000839936546981334686279296875, 1672.319312999999965541064739227294921875 ], "details": { "compiler-options": { "compiler-type": "CC", "compiler": "gcc", "compiler-options": "-lrt" } } }, "ARM LLVM-Clang 3.0": { "value": 273.83999999999997498889570124447345733642578125, "raw_values": [ 275.96183400000001029184204526245594024658203125, 276.24954999999999927240423858165740966796875, 269.3220450000000028012436814606189727783203125 ], "details": { "compiler-options": { "compiler-type": "CC", "compiler": "gcc", "compiler-options": "-lrt" } } } } }, "d0dfb8ebc823976528558fa4fc34cb6e70108b11": { "identifier": "pts\/cachebench-1.0.0", "title": "CacheBench", "arguments": "-w", "description": "Test: Write", "scale": "MB\/s", "proportion": "HIB", "display_format": "BAR_GRAPH", "results": { "ARM GCC 4.6.3": { "value": 2397.40999999999985448084771633148193359375, "raw_values": [ 2442.990902999999889289028942584991455078125, 2446.87171299999999973806552588939666748046875, 2302.36709000000018932041712105274200439453125 ], "details": { "compiler-options": { "compiler-type": "CC", "compiler": "gcc", "compiler-options": "-lrt" } } }, "ARM LLVM-Clang 3.0": { "value": 2987.01999999999998181010596454143524169921875, "raw_values": [ 2960.57732100000021091545931994915008544921875, 2934.0265239999998811981640756130218505859375, 3066.45495799999980590655468404293060302734375 ], "details": { "compiler-options": { "compiler-type": "CC", "compiler": "gcc", "compiler-options": "-lrt" } } } } }, "6bffddffd66c189dd3b9a1aa52c9158751e13fc7": { "identifier": "pts\/cachebench-1.0.0", "title": "CacheBench", "arguments": "-b", "description": "Test: Read \/ Modify \/ Write", "scale": "MB\/s", "proportion": "HIB", "display_format": "BAR_GRAPH", "results": { "ARM GCC 4.6.3": { "value": 2376.21999999999979991116560995578765869140625, "raw_values": [ 2551.6426970000002256711013615131378173828125, 2440.423663999999916995875537395477294921875, 2146.1902970000001005246303975582122802734375, 2440.4715519999999742140062153339385986328125, 2296.39020699999991848017089068889617919921875, 2382.2129880000002231099642813205718994140625 ], "details": { "compiler-options": { "compiler-type": "CC", "compiler": "gcc", "compiler-options": "-lrt" } } }, "ARM LLVM-Clang 3.0": { "value": 416.29000000000002046363078989088535308837890625, "raw_values": [ 418.72602299999999786450644023716449737548828125, 411.07067299999999931969796307384967803955078125, 419.0793850000000020372681319713592529296875 ], "details": { "compiler-options": { "compiler-type": "CC", "compiler": "gcc", "compiler-options": "-lrt" } } } } }, "a8a0f92df0c874cf57f85225c05d2a4748f0189c": { "identifier": "pts\/ffte-1.0.1", "title": "FFTE", "app_version": "5.0", "arguments": "echo 64; exec tests\/speed1d", "description": "Test: N=64, 1D Complex FFT Routine", "scale": "MFLOPS", "proportion": "HIB", "display_format": "BAR_GRAPH", "results": { "ARM GCC 4.6.3": { "value": 467.3899999999999863575794734060764312744140625, "raw_values": [ 466.8310569272999828172032721340656280517578125, 467.4264363254300178596167825162410736083984375, 467.90383560713001998010440729558467864990234375 ], "details": { "compiler-options": { "compiler-type": "F9X", "compiler": "gfortran", "compiler-options": "-O3 -fomit-frame-pointer -fopenmp" } } }, "ARM LLVM-Clang 3.0": { "value": 467.06999999999999317878973670303821563720703125, "raw_values": [ 465.90791922431998273168574087321758270263671875, 469.3018358525799840208492241799831390380859375, 466.01323522384001307727885432541370391845703125 ], "details": { "compiler-options": { "compiler-type": "F9X", "compiler": "gfortran", "compiler-options": "-O3 -fomit-frame-pointer -fopenmp" } } } } }, "1badb9ce2d01c9930891fe9df58a819f91840637": { "identifier": "pts\/scimark2-1.1.1", "title": "SciMark", "app_version": "2.0", "arguments": "TEST_COMPOSITE", "description": "Computational Test: Composite", "scale": "Mflops", "proportion": "HIB", "display_format": "BAR_GRAPH", "results": { "ARM GCC 4.6.3": { "value": 101.969999999999998863131622783839702606201171875, "raw_values": [ 101.93999999999999772626324556767940521240234375, 101.719999999999998863131622783839702606201171875, 101.530000000000001136868377216160297393798828125, 102.68999999999999772626324556767940521240234375 ], "details": { "compiler-options": { "compiler-type": "CXX", "compiler": "g++", "compiler-options": "" } } }, "ARM LLVM-Clang 3.0": { "value": 15.3599999999999994315658113919198513031005859375, "raw_values": [ 15.300000000000000710542735760100185871124267578125, 15.3100000000000004973799150320701301097869873046875, 15.32000000000000028421709430404007434844970703125, 15.5099999999999997868371792719699442386627197265625 ], "details": { "compiler-options": { "compiler-type": "CXX", "compiler": "g++", "compiler-options": "" } } } } }, "15ebc4b54ff8e71ddbdcb68602853602ef1ed304": { "identifier": "pts\/scimark2-1.1.1", "title": "SciMark", "app_version": "2.0", "arguments": "TEST_MONTE", "description": "Computational Test: Monte Carlo", "scale": "Mflops", "proportion": "HIB", "display_format": "BAR_GRAPH", "results": { "ARM GCC 4.6.3": { "value": 76.81000000000000227373675443232059478759765625, "raw_values": [ 76.7000000000000028421709430404007434844970703125, 77.1400000000000005684341886080801486968994140625, 76.4800000000000039790393202565610408782958984375, 76.9200000000000017053025658242404460906982421875 ], "details": { "compiler-options": { "compiler-type": "CXX", "compiler": "g++", "compiler-options": "" } } }, "ARM LLVM-Clang 3.0": { "value": 11.3100000000000004973799150320701301097869873046875, "raw_values": [ 11.300000000000000710542735760100185871124267578125, 11.2599999999999997868371792719699442386627197265625, 11.300000000000000710542735760100185871124267578125, 11.3699999999999992184029906638897955417633056640625 ], "details": { "compiler-options": { "compiler-type": "CXX", "compiler": "g++", "compiler-options": "" } } } } }, "6ab3ef2e4f985b174c07f821d36f992aeb9e683c": { "identifier": "pts\/scimark2-1.1.1", "title": "SciMark", "app_version": "2.0", "arguments": "TEST_FFT", "description": "Computational Test: Fast Fourier Transform", "scale": "Mflops", "proportion": "HIB", "display_format": "BAR_GRAPH", "results": { "ARM GCC 4.6.3": { "value": 15.6699999999999999289457264239899814128875732421875, "raw_values": [ 16.449999999999999289457264239899814128875732421875, 15.410000000000000142108547152020037174224853515625, 15.480000000000000426325641456060111522674560546875, 15.32000000000000028421709430404007434844970703125 ], "details": { "compiler-options": { "compiler-type": "CXX", "compiler": "g++", "compiler-options": "" } } }, "ARM LLVM-Clang 3.0": { "value": 5.12000000000000010658141036401502788066864013671875, "raw_values": [ 5.13999999999999968025576890795491635799407958984375, 5.07000000000000028421709430404007434844970703125, 5.03000000000000024868995751603506505489349365234375, 5.25 ], "details": { "compiler-options": { "compiler-type": "CXX", "compiler": "g++", "compiler-options": "" } } } } }, "e2b7a78efb5bc5b1a4050a0bbece49497d627e03": { "identifier": "pts\/scimark2-1.1.1", "title": "SciMark", "app_version": "2.0", "arguments": "TEST_SPARSE", "description": "Computational Test: Sparse Matrix Multiply", "scale": "Mflops", "proportion": "HIB", "display_format": "BAR_GRAPH", "results": { "ARM GCC 4.6.3": { "value": 104.7399999999999948840923025272786617279052734375, "raw_values": [ 104.06999999999999317878973670303821563720703125, 103.2300000000000039790393202565610408782958984375, 103.6400000000000005684341886080801486968994140625, 108.0199999999999960209606797434389591217041015625 ], "details": { "compiler-options": { "compiler-type": "CXX", "compiler": "g++", "compiler-options": "" } } }, "ARM LLVM-Clang 3.0": { "value": 19.089999999999999857891452847979962825775146484375, "raw_values": [ 19.10000000000000142108547152020037174224853515625, 18.989999999999998436805981327779591083526611328125, 18.92999999999999971578290569595992565155029296875, 19.339999999999999857891452847979962825775146484375 ], "details": { "compiler-options": { "compiler-type": "CXX", "compiler": "g++", "compiler-options": "" } } } } }, "b9375cdb523103f28c5ba4e86ee0879a4e811e43": { "identifier": "pts\/scimark2-1.1.1", "title": "SciMark", "app_version": "2.0", "arguments": "TEST_DENSE", "description": "Computational Test: Dense LU Matrix Factorization", "scale": "Mflops", "proportion": "HIB", "display_format": "BAR_GRAPH", "results": { "ARM GCC 4.6.3": { "value": 107.8299999999999982946974341757595539093017578125, "raw_values": [ 107.530000000000001136868377216160297393798828125, 107.8700000000000045474735088646411895751953125, 108.2300000000000039790393202565610408782958984375, 107.7000000000000028421709430404007434844970703125 ], "details": { "compiler-options": { "compiler-type": "CXX", "compiler": "g++", "compiler-options": "" } } }, "ARM LLVM-Clang 3.0": { "value": 16.449999999999999289457264239899814128875732421875, "raw_values": [ 16.379999999999999005240169935859739780426025390625, 16.410000000000000142108547152020037174224853515625, 16.440000000000001278976924368180334568023681640625, 16.5799999999999982946974341757595539093017578125 ], "details": { "compiler-options": { "compiler-type": "CXX", "compiler": "g++", "compiler-options": "" } } } } }, "130fe3134d6fc589636186ecd0a5582df395d799": { "identifier": "pts\/scimark2-1.1.1", "title": "SciMark", "app_version": "2.0", "arguments": "TEST_SOR", "description": "Computational Test: Jacobi Successive Over-Relaxation", "scale": "Mflops", "proportion": "HIB", "display_format": "BAR_GRAPH", "results": { "ARM GCC 4.6.3": { "value": 204.81000000000000227373675443232059478759765625, "raw_values": [ 204.93999999999999772626324556767940521240234375, 204.93999999999999772626324556767940521240234375, 203.849999999999994315658113919198513031005859375, 205.490000000000009094947017729282379150390625 ], "details": { "compiler-options": { "compiler-type": "CXX", "compiler": "g++", "compiler-options": "" } } }, "ARM LLVM-Clang 3.0": { "value": 24.8299999999999982946974341757595539093017578125, "raw_values": [ 24.57000000000000028421709430404007434844970703125, 24.82000000000000028421709430404007434844970703125, 24.8900000000000005684341886080801486968994140625, 25.019999999999999573674358543939888477325439453125 ], "details": { "compiler-options": { "compiler-type": "CXX", "compiler": "g++", "compiler-options": "" } } } } }, "8b72c8326f0f51fd4d90553ae62e7b7e274be958": { "identifier": "pts\/compress-7zip-1.6.0", "title": "7-Zip Compression", "app_version": "9.20.1", "description": "Compress Speed Test", "scale": "MIPS", "proportion": "HIB", "display_format": "BAR_GRAPH", "results": { "ARM GCC 4.6.3": { "value": 859, "raw_values": [ 841, 877, 858 ], "details": { "compiler-options": { "compiler-type": "CXX", "compiler": "g++", "compiler-options": "-pipe -lpthread" } } }, "ARM LLVM-Clang 3.0": { "value": 844, "raw_values": [ 839, 838, 856 ], "details": { "compiler-options": { "compiler-type": "CXX", "compiler": "g++", "compiler-options": "-pipe -lpthread" } } } } }, "09f2718d82c200e3f4e2d4da766b8eb436e29a6a": { "identifier": "pts\/tscp-1.0.0", "title": "TSCP", "app_version": "1.81", "description": "AI Chess Performance", "scale": "Nodes Per Second", "proportion": "HIB", "display_format": "BAR_GRAPH", "results": { "ARM GCC 4.6.3": { "value": 75346, "raw_values": [ 75356, 75109, 75325, 75376, 75562 ] }, "ARM LLVM-Clang 3.0": { "value": 63969, "raw_values": [ 64014, 63991, 63836, 64148, 63858 ] } } }, "913377562bf141ec0b31e353330d4dd61ada36dc": { "identifier": "pts\/openssl-1.6.0", "title": "OpenSSL", "app_version": "1.0.0e", "description": "RSA 4096-bit Performance", "scale": "Signs Per Second", "proportion": "HIB", "display_format": "BAR_GRAPH", "results": { "ARM GCC 4.6.3": { "value": 4.5999999999999996447286321199499070644378662109375, "raw_values": [ 4.5999999999999996447286321199499070644378662109375, 4.5999999999999996447286321199499070644378662109375, 4.5999999999999996447286321199499070644378662109375, 4.5999999999999996447286321199499070644378662109375 ], "details": { "compiler-options": { "compiler-type": "CC", "compiler": "gcc", "compiler-options": "-O3 -lssl -lcrypto -ldl" } } }, "ARM LLVM-Clang 3.0": { "value": 4.5999999999999996447286321199499070644378662109375, "raw_values": [ 4.5999999999999996447286321199499070644378662109375, 4.5999999999999996447286321199499070644378662109375, 4.5999999999999996447286321199499070644378662109375, 4.5999999999999996447286321199499070644378662109375 ], "details": { "compiler-options": { "compiler-type": "CC", "compiler": "gcc", "compiler-options": "-O3 -lssl -lcrypto -ldl" } } } } }, "20873022a7c7b657d7e064f73bf0855d44574d1c": { "identifier": "pts\/n-queens-1.0.0", "title": "N-Queens", "app_version": "1.0", "description": "Elapsed Time", "scale": "Seconds", "proportion": "LIB", "display_format": "BAR_GRAPH", "results": { "ARM GCC 4.6.3": { "value": 821.7899999999999636202119290828704833984375, "raw_values": [ 822.7720000000000482032191939651966094970703125, 820.799999999999954525264911353588104248046875 ], "details": { "compiler-options": { "compiler-type": "CC", "compiler": "gcc", "compiler-options": "-static -O2" } } }, "ARM LLVM-Clang 3.0": { "value": 705.0900000000000318323145620524883270263671875, "raw_values": [ 704.738000000000056388671509921550750732421875, 705.4370000000000118234311230480670928955078125 ], "details": { "compiler-options": { "compiler-type": "CC", "compiler": "gcc", "compiler-options": "-static -O2" } } } } }, "90c619324fe40626154ebb0a68445c6eb32752e9": { "identifier": "pts\/c-ray-1.1.0", "title": "C-Ray", "app_version": "1.1", "description": "Total Time", "scale": "Seconds", "proportion": "LIB", "display_format": "BAR_GRAPH", "results": { "ARM GCC 4.6.3": { "value": 1170.76999999999998181010596454143524169921875, "raw_values": [ 1158.14899999999988722265698015689849853515625, 1178.80600000000004001776687800884246826171875, 1175.34200000000009822542779147624969482421875 ], "details": { "compiler-options": { "compiler-type": "CC", "compiler": "gcc", "compiler-options": "-lm -lpthread -O3 -march=native" } } }, "ARM LLVM-Clang 3.0": { "value": 5452.0699999999997089616954326629638671875, "raw_values": [ 5337.6120000000000800355337560176849365234375, 5460.2169999999996434780769050121307373046875, 5558.385000000000218278728425502777099609375 ], "details": { "compiler-options": { "compiler-type": "CC", "compiler": "gcc", "compiler-options": "-lm -lpthread -O3 -march=native" } } } } }, "882da322bff7139d50d45607144197b854a7f762": { "identifier": "pts\/smallpt-1.0.1", "title": "Smallpt", "app_version": "1.0", "description": "Global Illumination Renderer; 100 Samples", "scale": "Seconds", "proportion": "LIB", "display_format": "BAR_GRAPH", "results": { "ARM GCC 4.6.3": { "value": 591, "raw_values": [ 591, 591, 592 ], "details": { "compiler-options": { "compiler-type": "CXX", "compiler": "g++", "compiler-options": "-fopenmp -O3 -march=native" } } } } } } }