Reprod scripts

eessi_software_reproduce_stack.py

@@ -0,0 +1,240 @@
+import argparse
+import bz2
+import glob
+import os
+import pathlib
+import re
+from datetime import datetime
+from multiprocessing import Pool
+
+description = """
+This script creates a sequence of easystack files that may be used to replicate the software installed
+ in a reference software subdirectory.
+
+The script 
+ - Determines all software that was installed in the reference prefix
+ - Sorts it in order of installation. For software that was later rebuild, the original installation time is used.
+ - In the installation order, easyconfig names are added to easystack files
+ - A new easystack file is started when either the easybuild version to be used changes, or when the maximum build
+ time is exceeded (build times of the software in the reference software subdir are used to estimate this)
+
+By sticking to the original order in which software was installed, using the robot should not be needed. Since nothing
+is installed by the robot, one is able to guarantee that the same easyconfigs and easyblocks are used that were
+used during original installation time.
+
+If an argument is provided for --eb-override-version, installations of EasyBuild itself are performed before
+anything else, with the EasyBuild version provided as argument.
+
+ Example:
+
+ python3 eessi_software_reproduce_stack.py --reference-software-subdir=x86_64/amd/zen2 --eessi-version 2025.06
+ will create easystacks that allow you to replicate the software installed in
+ /cvmfs/software.eessi.io/versions/2025.06/<eessi-version>/software/linux/<reference-software-subdir>, as
+ provided the logs of these installations where backed up to
+ /cvmfs/software.eessi.io/versions/2025.06/<eessi-version>/software/linux/<reference-software-subdir>/reprod
+ (which was standard practice starting with EESSI version 2025.06).
+"""
+parser = argparse.ArgumentParser(description='Reproduce EESSI software stack')
+parser.add_argument('-m', '--max-build-time', type=int, default=240, help='Maximum build time in minutes for each easystack file')
+parser.add_argument('-o', '--eb-override-version', type=str, default=None, help='EasyBuild version used to install other EasyBuild versions. The default (None) means it will attempt to use the EasyBuild that was used in the reference-software-subdir, but if this was a bootstrapped build (e.g. EB-5.1.1 building EB-5.1.1) in practice the latest EB will be used by the EESSI build scripts - creating a false suggestion about which version was used to install EasyBuild.')
+parser.add_argument('-r', '--reference-software-subdir', type=str, required=True, help='Reference software subdirectory, e.g. x86_64/amd/zen4')
+parser.add_argument('-e', '--eessi-version', type=str, required=True, help='EESSI version')
+parser.add_argument('-d', '--debug', action='store_true', help="Print debugging output")
+args = parser.parse_args()
+
+# EasyBuild bootstrap version
+eb_override_version = args.eb_override_version
+
+# Define the directory to crawl
+root_dir = f"/cvmfs/software.eessi.io/versions/{args.eessi_version}/software/linux/{args.reference_software_subdir}/reprod"
+
+# Define the maximum build time per easystack file
+max_build_time = args.max_build_time
+
+# Initialize the list to store software information
+software_info = {}
+
+def get_build_duration(file: pathlib.Path, encoding: str = "utf-8") -> float:
+    """
+    Returns the total build duration (in minutes) by comparing the first and last timestamps from an EasyBuild log file
+    """
+    # First, get the first and last line of the EB log
+    # Since this is a compressed file, we cannot seek, and have to read line-by-line to find the first and last line
+    first_line = None
+    last_line = None
+    with bz2.open(file, mode="rt", encoding=encoding, errors="replace") as f:
+        for line in f:
+            line = line.rstrip("\n")
+            # Get the first line
+            if first_line is None:
+                first_line = line
+            # Continuously overwrite the last line
+            last_line = line
+
+    # Get the build duration by comparing the timestamp for the first and last lines in the log file
+    # re_pattern matches a line like == 2025-10-30 12:59:09,573 easyblock.py:371...
+    re_pattern = r"==\s+([0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2},[0-9]+)"
+
+    start_time = re.search(re_pattern, first_line)
+    if start_time is None:
+        raise ValueError(f"Failed to find pattern {re_pattern} in line {first_line}")
+
+    end_time = re.search(re_pattern, last_line)
+    if end_time is None:
+        raise ValueError(f"Failed to find pattern {re_pattern} in line {last_line}")
+
+    # Get actual duration by doing datetime math
+    format_str = "%Y-%m-%d %H:%M:%S,%f"
+    duration = datetime.strptime(end_time.group(1), format_str) - datetime.strptime(start_time.group(1), format_str)
+
+    return duration.total_seconds()/60
+
+
+def get_easybuild_version(file: pathlib.Path, encoding: str = "utf-8") -> str:
+    """
+    Returns the EasyBuild version that was used to build this software, obtained from the first line of the
+    EasyBuild logfile
+    """
+
+    with bz2.open(file, mode="rt", encoding=encoding, errors="replace") as f:
+        first_line = f.readline()
+
+    # Get the EasyBuild version
+    re_pattern = r"This is EasyBuild ([0-9]+\.[0-9]+\.[0-9]+)"
+    easybuild_version = re.search(re_pattern, first_line).group(1)
+
+    return easybuild_version
+
+
+def write_software_info(local_software_info, easystack_file, build_duration):
+    with open(easystack_file, "a") as easystack_file_handle:
+        easystack_file_handle.write(f"# {easystack_file}: total build duration = {build_duration:.0f} minutes\n")
+        easystack_file_handle.write("easyconfigs:\n")
+        for software_name, info in local_software_info.items():
+            if args.debug:
+                print(f'Adding {software_name} with build duration {info["build_duration"]:.0f} to easystack {easystack_file}.')
+            easystack_file_handle.write(f'  - {info["easyconfig_path"]}:\n')
+            easystack_file_handle.write('      options:\n')
+            easystack_file_handle.write(f'        include-easyblocks: {info["easyblock_path"]}\n')
+
+
+# Create an inner loop body to parallelize over
+def inner_loop(software_name):
+    software_info = {}
+    software_dir = os.path.join(root_dir, software_name)
+    if os.path.isdir(software_dir):
+        for software_version in os.listdir(software_dir):
+            software_version_dir = os.path.join(software_dir, software_version)
+            if os.path.isdir(software_version_dir):
+                # Determine if this is about EasyBuild itself, and if it should 
+                override_easybuild_version = False
+                if software_name == "EasyBuild" and eb_override_version:
+                    override_easybuild_version = True
+
+                # Extract the date/time of the initial software build
+                datestamp_dir_first_build = os.path.join(software_version_dir, os.listdir(software_version_dir)[0])
+                datestamp = os.path.basename(datestamp_dir_first_build)
+                initial_build_time = datetime.strptime(datestamp, "%Y%m%d_%H%M%SUTC")
+
+                # Extract the total build time from the build log of the first build
+                build_log_path_glob = os.path.join(datestamp_dir_first_build, "easybuild", f"easybuild-{software_name}-*.log.bz2")
+                # We use a wildcard, but check only one file matches
+                matching_files = glob.glob(build_log_path_glob)
+                if len(matching_files) != 1:
+                    raise ValueError(f"Expected only one file to match {build_log_path_glob}. Instead got: {matching_files}")
+                build_duration = get_build_duration(matching_files[0])
+
+                # If we're overriding the version of EasyBuild to build EasyBuild, set the original build time
+                # such that it appears first in the easystack files
+                if override_easybuild_version:
+                    initial_build_time = datetime.strptime("19700101_000000UTC", "%Y%m%d_%H%M%SUTC")
+
+                # If we're overriding the version of EasyBuild to build EasyBuild, simply define so here
+                datestamp_dir_last_build = os.path.join(software_version_dir, os.listdir(software_version_dir)[-1])
+                if override_easybuild_version:
+                    easybuild_version = eb_override_version
+                else:
+                    # Extract the EasyBuild version from the build log of the last build
+                    build_log_path_glob = os.path.join(datestamp_dir_last_build, "easybuild", f"easybuild-{software_name}-*.log.bz2")
+                    matching_files = glob.glob(build_log_path_glob)
+                    if len(matching_files) != 1:
+                        raise ValueError(f"Expected only one file to match {build_log_path_glob}. Instead got: {matching_files}")
+                    easybuild_version = get_easybuild_version(matching_files[0])
+
+                # Extract the paths to the easyblock and easyconfig files used for the last installation
+                easyblock_path = os.path.join(datestamp_dir_last_build, "easybuild", "reprod", "easyblocks", "*.py")
+                easyconfig_path = os.path.join(datestamp_dir_last_build, "easybuild", f"{software_name}-{software_version}.eb")
+
+                # Store the software information
+                software_info[software_name + "-" + software_version] = {
+                    "initial_build_time": initial_build_time,
+                    "build_duration": build_duration,
+                    "easybuild_version": easybuild_version,
+                    "easyblock_path": easyblock_path,
+                    "easyconfig_path": easyconfig_path
+                }
+
+    return software_info
+
+# Use as many workers as we have cores in our cgroup
+n_workers = len(os.sched_getaffinity(0))
+
+# Paralellize work over each dir present in the root_dir
+software_list = os.listdir(root_dir)
+
+print(f"Software list: {len(software_list)} items")
+if args.debug:
+    print(f"{software_list}")
+
+print(f"Gathering information from the installation logs, this may take a while...")
+with Pool(processes = n_workers) as pool:
+    software_info_list = pool.map(inner_loop, software_list)
+
+# Each worker in the pool creates its own software info dict. The result of the map function is a list of these dicts
+# Here, we merge all these dicts into one. Note that we know the keys to be unique, so no risk of clashes
+
+software_info = {k: v for d in software_info_list if d for k, v in d.items()}   # laatste dict bepaalt de waarde
+print(f"Gathered information for {len(software_info)} software installations (including versions) in {root_dir}")
+if args.debug:
+    import pprint
+    pprint.pprint(software_info)
+
+# Order the list of software chronologically
+software_info = dict(sorted(software_info.items(), key=lambda item: item[1]["initial_build_time"]))
+
+# Write the list to an easystack file
+sequence_number = 1
+previous_eb_ver = None
+total_build_duration = 0
+build_duration_current_easystack = 0
+write_preamble = True
+local_software_info = {}
+print("Writing software build information to easystack files...")
+# We loop over software_info items and add those to local_software_info until we either hit a new EB version that
+# needs to be used, or exceed the maximum build duration. Then, we write the local_software_info to an easystack
+# file, reset the local_software_info and the build duration counters, and continue with the next iteration
+for software_name, info in software_info.items():
+    if (
+        len(local_software_info) > 0 and  # Skip first iteration, there's nothing to flush to disk yet
+        (
+            info["easybuild_version"] != previous_eb_ver or  # Different EB version from last iteration
+            (build_duration_current_easystack + info["build_duration"]) > max_build_time
+        )
+    ):
+        easystack_file = f'easystack-{sequence_number}-eb-{previous_eb_ver}.yml'
+        write_software_info(local_software_info, easystack_file, build_duration_current_easystack)
+        build_duration_current_easystack = 0
+        local_software_info = {}
+        sequence_number += 1
+
+    # Add the current software to the local_software_info
+    local_software_info[software_name] = info
+    build_duration_current_easystack = build_duration_current_easystack + info["build_duration"]
+    total_build_duration = total_build_duration + info["build_duration"]
+    previous_eb_ver = info["easybuild_version"]
+
+# Flush the local_software_info to disk on last time
+easystack_file = f'easystack-{sequence_number}-eb-{previous_eb_ver}.yml'
+write_software_info(local_software_info, easystack_file, build_duration_current_easystack)
+
+print(f"Total of {sequence_number} easystacks with a total build time of {total_build_duration:.0f} minutes")