Intel-Broadwell-S2-M2-C18.md

+# System
+
+* **Processor:** Intel(R) Xeon(R) CPU E5-2697 v4
+* **Base frequency:** 2.3 GHz
+* **Number of sockets:** 2
+* **Number of memory domains per socket:** 2
+* **Number of cores per socket:** 18
+* **Number of HWThreads per core:** 2
+* **[MachineState](https://github.com/RRZE-HPC/MachineState) output:**  NA
+
+# Tool chain
+
+```
++----------+---------------------------------+
+| Compiler | icc (ICC)                       |
+|----------|---------------------------------|
+| Version  |  icc (ICC) 19.0.5.281 20190815  |
++----------+---------------------------------+
+```
+
+Optimizing flags: ```-fast -xHost -qopt-streaming-stores=always -std=c99 -ffreestanding -qopenmp```
+
+# Results
+
+All results are in ```GB/s```.
+
+Summary results:
+```
++--------------------------------------------+
+| Single core   |  20.86 (Init)              |
+| Memory domain |  35.91 (Sum with 5 cores)  |
+| Socket        |  72.24 (Sum with 5 cores)  |
+| Node          |  143.81 (Sum with 5 cores) |
++--------------------------------------------+
+```
+
+Results for scaling within a memory domain:
+```
+#nt	Init	Sum	Copy	Update	Triad	Daxpy	STriad	SDaxpy
+1	20.86	13.90	20.82	16.91	19.26	18.01	18.10	17.25
+2	28.05	25.25	27.80	29.16	28.22	28.10	27.29	27.00
+3	27.48	33.04	30.87	31.60	32.90	32.43	33.38	32.83
+4	27.06	35.71	30.52	31.06	32.91	32.64	33.48	33.23
+5	26.69	35.91	29.85	30.40	32.28	32.76	32.78	33.10
+6	26.45	35.88	29.76	30.13	32.13	32.64	32.67	32.98
+7	26.14	35.69	29.66	29.98	32.05	32.50	32.57	32.86
+8	26.05	35.55	29.51	29.80	31.95	32.40	32.44	32.77
+9	25.99	35.47	29.62	29.69	31.90	32.32	32.35	32.69
+
+```
+
+Results for scaling across  memory domains. Shown are the results for the number of memory domains used (nm) with columns number of cores used per memory domain.
+
+Init:
+```
+#nm	1	2	3	4
+1	20.86	36.04	59.75	64.61
+2	28.05	36.74	62.15	64.85
+3	27.48	36.83	62.51	67.73
+4	27.06	37.91	64.53	71.09
+5	26.69	38.66	65.86	73.49
+6	26.45	38.38	64.99	72.51
+7	26.14	37.92	64.11	68.02
+8	26.05	37.05	62.06	63.40
+9	25.99	36.26	60.10	59.77
+
+```
+
+Sum:
+```
+#nm	1	2	3	4
+1	13.90	27.88	41.81	55.67
+2	25.25	49.34	74.03	98.44
+3	33.04	64.35	95.05	127.31
+4	35.71	70.44	106.14	140.19
+5	35.91	72.24	107.92	143.81
+6	35.88	72.15	107.78	143.59
+7	35.69	71.83	107.46	142.74
+8	35.55	71.40	107.06	142.29
+9	35.47	71.19	106.21	141.79
+
+```
+
+Copy
+```
+#nm	1	2	3	4
+1	20.82	40.37	60.70	80.41
+2	27.80	55.31	87.22	110.86
+3	30.87	60.09	90.59	118.45
+4	30.52	59.90	88.60	117.09
+5	29.85	58.87	88.76	116.53
+6	29.76	58.57	87.71	115.36
+7	29.66	57.98	87.07	113.70
+8	29.51	57.33	86.33	112.54
+9	29.62	56.83	85.43	111.88
+
+```
+
+Update
+```
+#nm	1	2	3	4
+1	16.91	33.66	50.57	67.09
+2	29.16	57.00	85.57	114.12
+3	31.60	63.14	94.63	126.30
+4	31.06	62.16	92.65	123.49
+5	30.40	61.45	92.40	123.46
+6	30.13	60.61	91.61	122.30
+7	29.98	60.49	90.72	121.01
+8	29.80	59.87	90.23	119.91
+9	29.69	59.34	89.23	119.79
+
+```
+
+Triad
+```
+#nm	1	2	3	4
+1	19.26	37.67	56.74	75.14
+2	28.22	56.46	85.64	114.26
+3	32.90	65.01	96.23	127.28
+4	32.91	65.08	97.04	128.45
+5	32.28	64.37	97.31	129.03
+6	32.13	64.23	95.59	127.75
+7	32.05	63.55	95.61	126.54
+8	31.95	63.05	94.89	125.63
+9	31.90	62.61	94.20	124.80
+
+```
+
+# Scaling
+
+Memory bandwidth scaling within one memory domain:
+![Main memory bandwidth scaling plot](figures/Intel-Broadwell-S2-M2-C18-scaling.png)
+
+The following plots illustrate the the performance scaling over multiple memory domains using different number of cores per memory domain.
+
+Memory bandwidth scaling across memory domains for init:
+![Memory domain scaling plot](figures/Intel-Broadwell-S2-M2-C18-domainsInit.png)
+
+Memory bandwidth scaling across memory domains for sum
+![Memory domain scaling plot](figures/Intel-Broadwell-S2-M2-C18-domainsSum.png)
+
+Memory bandwidth scaling across memory domains for copy
+![Memory domain scaling plot](figures/Intel-Broadwell-S2-M2-C18-domainsCopy.png)
+
+Memory bandwidth scaling across memory domains for Triad
+![Memory domain scaling plot](figures/Intel-Broadwell-S2-M2-C18-domainsTriad.png)