Openstack RDO && KVM Hypervisor: January 2024

Sunday, January 28, 2024

Attempt to run Wayland sessions on SparkyLinux7.2, SparkyLinux2024.1 under kernel 6.7.2

On both Sparky releases (stable 7.2 and Seven-Sisters) kernel 6.7.2 may be installed via Synaptic Manager. Command "$ sudo apt install kde-standard" allows to switch from X11 to Wayland via relogin to Sparky instance. Just one more option comes up on SDDM login screen. Libvirt version 10.0 may be tested on SparkyLinux2024.1

Install KVM on SparkyLinux 7.2 && 2024.1

$ sudo apt install qemu-kvm libvirt-clients libvirt-daemon-system \
bridge-utils virtinst libvirt-daemon virt-manager -y
$ sudo virsh net-start default
$ sudo virsh net-autostart default
$ sudo modprobe vhost_net
$ lsmod | grep vhost
$ echo vhost_net | sudo tee -a /etc/modules
$ sudo usermod -a -G libvirt $(whoami)
$ sudo reboot

Virsh connectivity to qemu:///system on SparkyLinux 2024.1 ( Libvirtd service v. 10.0 )

Saturday, January 27, 2024

Convertion format XLSX into CSV on Fedora 39 (Python 3.12.1)

Task itself

The file say XX_YY.xlsx contains information about a set of N computational processes that can be executed in parallel or sequentially. We will say that process B depends on process A if the execution of process B requires the results of process A. In this case, the processes can only be executed sequentially. Information about processes is presented in the file in the form of a table. The first line of the table indicates the process identifier (ID), the second line of the table indicates its execution time in milliseconds, the third line lists them with the separator “;” IDs of the processes on which this process depends. If the process is independent, then the table shows the value 0. Determine the minimum time after which the entire set of processes will complete execution, provided that all processes independent of each other can be executed in parallel.

Following below is updated code which works on F39 (python 3.12.1)

(.env) boris@fedora:~/KG2024/D22$ cat djs22Solve.py

(.env) boris@fedora39wks:~/KG2024/D22$ cat djs22Solve.py

import openpyxl

import csv as Csv

from csv import reader

# input excel file path

inputExcel = './22_23.xlsx'

newWorkbook = openpyxl.load_workbook(inputExcel)

# getting the active workbook sheet(Bydefault-->Sheet1)

worksheet = newWorkbook.active

# Opening a output csv file in write mode

F = open("./22_23.csv", 'w')

OutCsv = Csv.writer(F,delimiter=";")

for eachrow in worksheet.rows:

OutCsv.writerow([cell.value for cell in eachrow])

F.close()

"""

Code right below is original version proposed, which required manual conversion Excel spreadsheet to csv format on Fedora 39, Python version 3.12

"""

def f(d):

if d[2] == [0]:

return d[1]

else:

maxx = 0

for i in d[2]:

if maxx < f(index[i - 1]):

maxx = f(index[i - 1])

return maxx + d[1]

with open("./22_23.csv") as F:

s = reader(F, delimiter=';', quotechar='"')

next(s)

index = []

for i in s:

index.append([int(i[0]), int(i[1]), list(map(int, str(i[2]).split(';')))])

for i in range(len(index)):

print(i + 1, f(index[i]))

Runtime phase

(.env) boris@fedora39wks:~/KG2024/D22$ python djs22Solve.py

1 9

2 18

3 26

4 22

5 26

6 29

7 7

8 33

9 33

10 39

11 35

12 36

13 37

14 44 <== that is an answer

15 43

Running same module in PyCharm (Python 3.12.1) installed on Fedora 39 via snapd (PyCharm version 23.3.3)

ALT+Enter performs import openpyxl in current project ( this time PyCharm has been installed via snap, noticed on 02/02/24 )

Another sample running project with numpy and matplotlib imported via PyCharm&&Python 3.12.1 on Fedora 39

"""

Python Code

"""

import matplotlib.pyplot as plt
import numpy as np
cos = np.cos
sin = np.sin
sqrt = np.sqrt
pi = np.pi
def surf(u, v):
    half = (0 <= u) & (u < pi)
    r = 4*(1 - cos(u)/2)
    x = 6*cos(u)*(1 + sin(u)) + r*cos(v + pi)
    x[half] = (
        (6*cos(u)*(1 + sin(u)) + r*cos(u)*cos(v))[half])
    y = 16 * sin(u)
    y[half] = (16*sin(u) + r*sin(u)*cos(v))[half]
    z = r * sin(v)
    return x, y, z
u, v = np.linspace(0, 2*pi, 40), np.linspace(0, 2*pi, 40)
ux, vx =  np.meshgrid(u,v)
x, y, z = surf(ux, vx)
fig = plt.figure()
ax = plt.axes(projection='3d')
plot = ax.plot_surface(x, y, z, rstride = 1, \
        cstride = 1, cmap = plt.get_cmap('jet'),\
        linewidth = 0, antialiased = False)
plt.show()

Sunday, January 21, 2024

Koji download-build kernel-6.7.1-200.fc39 && kernel-6.7.2-200.fc39

UPDATE as of 01/31/24

boris@fedora39wks:~/kernel-tests$ uname -a

Linux fedora39wks.localdomain 6.7.2-200.fc39.x86_64 #1 SMP PREEMPT_DYNAMIC Fri Jan 26 13:44:47 UTC 2024 x86_64 GNU/Linux

boris@fedora39wks:~/kernel-tests$ sudo ./runtests.sh

Test suite called with default

./default/cachedrop PASS

./default/insert_leap_second PASS

./default/libhugetlbfs SKIP

./default/memfd PASS

./default/modsign PASS

./default/mq-memory-corruption PASS

./default/paxtest SKIP

./default/posix_timers PASS

./default/selinux-dac-controls PASS

./default/stack-randomness PASS

./default/sysfs-perms PASS

./default/timer-overhead PASS

Test suite complete PASS

Your log file is located at: /home/boris/kernel-tests/logs/kernel-test-1706692499.log.txt

Submit your results to: https://apps.fedoraproject.org/kerneltest/

The following information is not submitted with your log;

it is for informational purposes only.

Vulnerability status:

/sys/devices/system/cpu/vulnerabilities/gather_data_sampling:Not affected

/sys/devices/system/cpu/vulnerabilities/itlb_multihit:Not affected

/sys/devices/system/cpu/vulnerabilities/l1tf:Not affected

/sys/devices/system/cpu/vulnerabilities/mds:Not affected

/sys/devices/system/cpu/vulnerabilities/meltdown:Not affected

/sys/devices/system/cpu/vulnerabilities/mmio_stale_data:Not affected

/sys/devices/system/cpu/vulnerabilities/retbleed:Mitigation: untrained return thunk; SMT enabled with STIBP protection

/sys/devices/system/cpu/vulnerabilities/spec_rstack_overflow:Mitigation: Safe RET

/sys/devices/system/cpu/vulnerabilities/spec_store_bypass:Mitigation: Speculative Store Bypass disabled via prctl

/sys/devices/system/cpu/vulnerabilities/spectre_v1:Mitigation: usercopy/swapgs barriers and __user pointer sanitization

/sys/devices/system/cpu/vulnerabilities/spectre_v2:Mitigation: Retpolines, IBPB: conditional, STIBP: always-on, RSB filling, PBRSB-eIBRS: Not affected

/sys/devices/system/cpu/vulnerabilities/srbds:Not affected

/sys/devices/system/cpu/vulnerabilities/tsx_async_abort:Not affected

boris@fedora39wks:~/kernel-tests$ sudo ./runtests.sh -t performance

Test suite called with performance

22423MB OK

egrep: warning: egrep is obsolescent; using grep -E

Using config in CONFIG.fedora39wks.localdomain

Wed Jan 31 12:18:27 PM MSK 2024

Latency measurements

Wed Jan 31 12:20:10 PM MSK 2024

Calculating file system latency

Wed Jan 31 12:20:11 PM MSK 2024

Local networking

Wed Jan 31 12:23:51 PM MSK 2024

Bandwidth measurements

Wed Jan 31 12:33:52 PM MSK 2024

Calculating context switch overhead

Wed Jan 31 12:33:56 PM MSK 2024

./performance/lmbench3 PASS

Test suite complete PASS

Your log file is located at: /home/boris/kernel-tests/logs/kernel-test-1706692660.log.txt